80 percent lowers

Our famous, original forged 80% lower. It's the lower trusted by tens of thousands of AR builders. Proudly forged, cut, and anodized in the U.S.A., this 80 percent lower is the key to building your custom AR-15 truly from scratch. This receiver blank features a matte black anodized finish that perfectly matches any upper receiver.

If you want the toughest of the tough, a forged 80 percent lower is the way to go. Forged lowers are the most popular choice among most builders for this reason. Billet. Billet lowers are also quite popular and they're easy to machine. Just like forged lowers, billet 80 lowers are made from an aluminum alloy, 6061 T6 billet aluminum.SK-Ultra Skeletonized Ambi AR15 Receiver Set [FFL] $ 399.99 $ 349.94. Showing all 12 results. This is our product category for skeletonized AR15 lower receivers and receiver sets which are 100% complete stripped. Shop billet skeletonized AR-15 lower stripped for sale at great prices.80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. INCREDIBLY PRECISE We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.Features. Forged from 7075-T6 aluminum by Cerro, these 80 lowers start from the best materials available. The 80 lower is tumbled and deburred with a natural finish. Our 80 lower include an upper tensioning set screw hole to tighten the upper and lower fit to your liking. The magazine well is broached for consistent magwells from part to part.All of our 80% lowers are made from T6 aircraft grade aluminum, and we have options for both open and closed trigger lowers. These 80% lower receivers are guaranteed to easily fit and withstand even the most rugged use. Buying our 80% lower receivers makes upgrading your AR15 fast and affordable. We offer the best prices with fast shipping on ...

How-To’s, Product Reviews, and more! Modulus Arms is proudly known as the best 80 percent lower and 80% lower jig manufacturer on the market. Come check out our selection of American-made 80 lowers today! All of our products ship FAST.Are you tired of paying high energy bills every month? If you’re a Dominion Energy customer, there are several strategies you can implement to lower your energy rates and save mone...80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. INCREDIBLY PRECISE We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum. What are Blemished 80% Lowers? Blemished 80% lowers are lower receivers that have minor cosmetic imperfections. These imperfections do not affect the performance, durability, or safety of the product. These blemishes are minor and vary, including minor scratches, uneven paint, small dents, and other small imperfections that are purely cosmetic. When it comes to home renovations, replacing the carpet can be a significant expense. However, there are several budget-friendly alternatives that can help lower the average price ...80% 1911A1, Tank Commander, 45 ACP Pistol Build Kit – Checkered Wood Grips, Novak Style 3-Dot Sights, 7 Rounds, 2 Magazines. $ 489.99 $ 409.99. SALE! 80% 1911A1, Tank Commander, 9mm Pistol Build Kit – Checkered Wood Grips, Novak Style 3-Dot Sights, 9 Rounds, 2 Magazines. $ 489.99 $ 419.99. SALE! 80% Sig Sauer P320 Full Size 9mm Luger Build Kit.Browse a variety of 80 percent AR lowers in different colors, patterns and engravings. Mail in your lower for serial number, manufacturer, safety, SBR or NFA engraving.Get a precision machined 80% lower receiver for sale. Not the cheapest 80 percent lower just the best value. A quality billet 7075 80 Lower is now available.

What are Blemished 80% Lowers? Blemished 80% lowers are lower receivers that have minor cosmetic imperfections. These imperfections do not affect the performance, durability, or safety of the product. These blemishes are minor and vary, including minor scratches, uneven paint, small dents, and other small imperfections that are purely cosmetic.Most mortgage lenders require you to have 20 percent equity in your home before they'll approve you for a refinance. But if your home lost value after you purchased it, you might n...The decision has been nearly two years in the making. Whether you can touch it or not, a book is a book, says the European Union. In the EU, print books enjoy a lower value-added t...The decision has been nearly two years in the making. Whether you can touch it or not, a book is a book, says the European Union. In the EU, print books enjoy a lower value-added t...SB23-279 was signed into law on June 2nd 2023. According to the Colorado state senate bill, 80% lower receivers and frames will no longer be legal for residents of Colorado to manufacture, possess or sell 80 lowers or unfinished pistol frames beginning January 1, 2024. While 80 lowers may be legal per federal law, in June of 2021, Colorado ...Apr 10, 2015 ... For us 'infidels', can someone briefly explain what the first sentence means? 80 percent lowers? Etc.

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All machining processes for our LW-Skeletonized Ambi AR 15 80% Lower are completed other than drilling/milling the FCG (Fire Control Group) pocket and trigger slot, and drilling the Selector switch, Trigger and Hammer pin holes. – Ambidextrous Bolt Release. – Mates with any mil-spec AR-15 upper receiver. – CNC Machined from 6061-T6 Billet ...JE MAKO Glock® 19 Compatible Pistol Build Kit w/ Black or Stainless Barrel. $319.99 - $339.99. 21 of 21 Items. 1911 and GLOCK®-Compatible Build Kits for your 80% frame. Find every popular build kit for your 80% GLOCK®-compatible (p80) frame, your newly-fabricated aluminum 1911 frame, or even your 80% MUP-1 Sig P320 chassis!The JT-9 Lower Receiver in 80% completed form. The JT-9 is precision CNC-machined from solid aerospace billet aluminum. It is not a cheap forging. This is a top ...SK-Ultra Skeletonized Ambi AR15 Receiver Set [FFL] $ 399.99 $ 349.94. Showing all 12 results. This is our product category for skeletonized AR15 lower receivers and receiver sets which are 100% complete stripped. Shop billet skeletonized AR-15 lower stripped for sale at great prices.Build your own Glock-style handgun at home with 80% Glock compatible lowers and frames. No registration, FFL, or transfer fees required. Customize your pistol with OEM and …Less drilling, drill only 1 hole prior to milling. World’s fastest jig. Jig requires no disassembly of side walls to insert or remove 80% lowers. 80% lowers can be inserted or removed in under 10 seconds. Easy. Built-in measuring gauges. No measuring tools needed. No drill press needed, only a hand drill and handheld router.

80 Lower Products. If you’re searching for 80 lower receivers for your rifle, you’ve come to the right place. From anodized forged 80% lower AR-15 receivers to AR-10 80 percent lower receivers, our selection of raw and anodized billet or forged lowers are produced in-house with the utmost precision to ensure nothing but high performance.Looking for a product featured in this video? YouTube prevents us from posting links. Head over to our website to find what you're looking for.Check out our ...Working capital is defined as current assets minus current liabilities. Current assets are assets that will be used within the year, and current liabilities are debts that will be ...All machining processes for our black anodized AR15 80% Lower are completed other than drilling/milling the FCG (Fire Control Group) pocket and trigger slot, and drilling the Selector switch, Trigger and Hammer pin holes. – Mates with any mil-spec AR-15 upper receiver. – CNC Machined from 6061-T6 Billet Aluminum.NO! As of this guide’s initial publish date, 80% lower receivers and frames are not considered as firearms by the ATF and ARE NOT legal to ship directly to buyers residing in California. Per AB 1621, effective July 1, 2022, CA began to legally define 80 lowers as firearms, despite this contradicting ATF federal policies.SR25 type AR-10 .308 80 Lower Receiver Bulk 10 Pack. $ 1,349.99 $ 1,349.73. Showing all 9 results. Check our bulk packs of 80 Percent Lower Receivers, and select a 3 pack, 5 pack or 10 pack in several styles and colors to Save some money! Check our bulk packs of 80 Percent Lower Receivers, and select a 3 pack, 5 pack or 10 pack in several ...80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. INCREDIBLY PRECISE We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.Shop for high-quality 80 percent lower receivers made from billet or forged aluminum at Daytona Tactical. Build your own custom AR-15 or AR-308 without a background check or serial number.Netflix decreased its subscription costs in over 100 territories, including Egypt, Libya, Iran, Kenya, and the Philippines, among others. Netflix decreased its subscription costs i...

JE MAKO Glock® 19 Compatible Pistol Build Kit w/ Black or Stainless Barrel. $319.99 - $339.99. 21 of 21 Items. 1911 and GLOCK®-Compatible Build Kits for your 80% frame. Find every popular build kit for your 80% GLOCK®-compatible (p80) frame, your newly-fabricated aluminum 1911 frame, or even your 80% MUP-1 Sig P320 chassis!

80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. INCREDIBLY PRECISE We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum. AR-10 Upper & Lower Receiver Set - Tungsten (Ejection Port Cover+ Forward Assist -Installed ) MSRP: Was: $224.25. Now: $219.99. 12 of 12 Items. Looking for top-quality AR-10 80% lowers? Browse our extensive selection of premium AR-10 80% lowers that are designed to deliver exceptional performance. Sep 8, 2020 · An 80 percent lower is not yet a firearm — not technically or legally, that is. You see, the lower receiver you purchase online or from a local dealership is still a hunk of aluminum or polymer. It is 80% completed, hence the name. To finish your DIY rifle, you must mill and drill the remaining components into the lower and complete the build ... 9mm AR-9 80% Lower Receiver - Glock Compatible - Black. $139.99. QTY: get 5% off Buy 3 - 4. get 10% off Buy 5 - 10. get 15% off Buy 11 - 20. We received permission from the Federal Court to sell this item. State Restrictions apply.Phantom 1911 80% Jig by Stealth Arms. $199.95. 6 of 6 Items. Your next 1911 doesn't need to come from those glass counters at the gun store. Nor do you need to pay a premium for a certain brand, only to swap out parts that you don't want in the first place. Thanks to partnerships with industry-leading makers, we've brought to market some high ...We now feature bulk packs in 3-pack, 5-pack and 10-pack options for our AR15 80% Lower products, and those can be found in our 80% Lower Bulk Packs category. Discounted pricing for AR 15 80% Lowers is also available to wholesale dealers of our products, and you can find more information about in our Dealer – Bulk category in the main menu.Indices Commodities Currencies StocksAug 17, 2021 ... A friend mentioned this last weekend that Oregon quietly passed a law banning the possession of any unserialized firearms.Home / 80 Percent Lowers / 308 AR10 80% Lower Receivers / Plain 308 AR10 80% Lowers / Raw Billet SR25 type AR-10 .308 80% Lower Receiver. Raw Billet SR25 type AR-10 .308 80% Lower Receiver. Rated 5.00 out of 5. $169.99 $149.97 Add to cart.308 80% LOWER RECEIVER AND JIG SYSTEM – OLIVE DRAB GREEN $ 109.00 Read more; 308 80% LOWER RECEIVER AND JIG SYSTEM – WHITE $ 109.00 Read more; Sale! 308 Complete Upper – 13.5in Barrel – 12in M-LOK – BLK $ 599.99 $ 559.99 Add to cart; Sale! 308 Lower Parts Kit – Black, Lower Parts Kit w/ Upgraded Grip, Extended Trigger Guard $ 105.99 ...

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A 80 lower jig provides a template for simplifying the repetitive, mechanical processes that are required when building a rifle out of an 80% lower receiver. For example, it empowers you to drill holes in the precise location needed to assemble the lower receiver of an AR-15, AR-308, AR-10, AR9, or similar carbines and rifles.HBO Now currently costs $15 per month, almost double the price of Netflix. HBO has long argued that the quality of its content, which includes shows like Game of Thrones, True Dete... 308 80% LOWER RECEIVER AND JIG SYSTEM – OLIVE DRAB GREEN $ 109.00 Read more; 308 80% LOWER RECEIVER AND JIG SYSTEM – WHITE $ 109.00 Read more; Sale! 308 Complete Upper – 13.5in Barrel – 12in M-LOK – BLK $ 599.99 $ 559.99 Add to cart; Sale! 308 Lower Parts Kit – Black, Lower Parts Kit w/ Upgraded Grip, Extended Trigger Guard $ 105.99 ... Discover alternative approaches to lower blood pressure beyond what medications & diet do. Learn about innovative strategies for managing hypertension. National Center 7272 Greenvi...The Billet AR-15 80% Lower Receiver from 80 Percent Arms has an ultra-tough design to withstand the harshest environments in any situation using. Made from aircraft-grade billet aluminum giving this receiver excellent durability and strength. The Flat Dark Earth Cerakote Coating is an exact match to the Magpaul FDE color.If you’re planning to give your home a fresh new look by painting the interior, you may be wondering about the average cost of such a project. One effective way to reduce the avera...80% Practice Lower. $20.00 $19.00. Out of Stock. Unleash your inner gunsmith with Wolfpack Armory's 80% lower receivers. Designed for customization and craftsmanship, our 80% lowers provide the foundation for building your dream AR-15. Unleash your creativity.AR-10 Upper Receiver. $180.00. Add to Cart. AR15 Lower Receivers and Complete Receiver Sets. Hell Fire Armory is dedicated to selling you the highest quality 80% lower receivers and upper receivers. We specialize in 80% AR15 lower receivers, 80% AR10 lower receivers, AR10 upper receivers, AR15 upper receivers, jigs, and tooling.Polymer80 PF940Cv1™ 80% Compact Frame and Jig Kit (Glock® 19/23 Compatible) - 3-Pack. MSRP: Was: Now: $639.99. Out of stock. 24 of 24 Items. Frames for Glock® Series-Compatible and 1911 handguns. Exercise your Second Amendment right and become the proud builder of your first or next handgun -- minus the brand-name price tags, extra fees ...As the name implies, forged 80 percent lowers are made from a forged aluminum alloy: Mil-spec 7075 T6 aluminum. This is the same alloy the military uses to build its standard-issue M4s and M16s. Forged units are cheap and easy to produce, making them affordable but tough. If you want the toughest of the tough, a forged 80 percent lower is the ...AR-15 80% Lower Receiver. $130.00. Type of finish. Quantity. Add to Cart. The Juggernaut Tactical AR-15 80% Lower Receiver, precision CNC-machined from solid aerospace billet aluminum. This top-tier 80% lower receiver is perfect for any high-quality AR-15 build; it is not a cheap forging. We apply our own Cerakote—a ceramic-based … ….

Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver and PF940C 80% Pistol Frame (Black Only) A two-for-one combo. Includes AR-15 80% lower and P80 80% Frame. Some builders just want to get their hands working, but they can't decide whether to start with an AR-15 lower, or an 80% frame. Can't decide? Grab them both. This lower-and-frame...Is it true that 1 percent of Americans control a third of the wealth? Find out if it's true that 1 percent of Americans control a third of the wealth. Advertisement "We are the 99 ...Jun 26, 2020 ... Best Prices on 80% lowers and fast shipping! Tactical Machining is the best source for 80 percent lowers, build kits & accessories. Our ...Aug 15, 2022 · The Billet AR-15 80% Lower Receiver from 80 Percent Arms has an ultra-tough design to withstand the harshest environments in any situation using. Made from aircraft-grade billet aluminum giving this receiver excellent durability and strength. The Flat Dark Earth Cerakote Coating is an exact match to the Magpaul FDE color. Was: $99.99. Now: $84.99. 31 of 31 Items. We always update this page with our latest and great products, on sale today! Part of our commitment to you at 80-lower.com includes promising the lowest possible prices on 80 lower receiver units, AR-15 uppers, bulk purchases, 80 lower jigs, sights and scopes, accessories, and much more.Mar 8, 2017 ... What's the difference between billet vs forged 80% lowers? In this quick video, https://www.80-lower.com/ takes a closer look at the ...Build your own custom firearm with 80% lower receivers from 5D Tactical. Find billet and forged frames, jig kits, parts and accessories for AR-15, AR-308, AR-9 and pistol projects.To find what percentage one number is of another; divide the first number by the other number and multiply by 100. For example, four is 50 percent of eight because four divided by ...The AR lower parts assembly includes the following: Stripped lower receiver, or fabricated 80% Lower. Lower parts kit. Buffer tube. Buffer and recoil spring. Pistol grip. Castle nut. Latch plate. Grips, castle nuts, and latch plates are typically included in the lower parts kit. 80 percent lowers, 80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. INCREDIBLY PRECISE We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum., RAW - 80% Percent Lower. AR-15 80% Lower - Raw 7075-T6 forging fully broached, ensuring a perfect fit. Forged from 7075-T6 aluminum Attention all shoppers: Thunder Tactical will not ship 80% lowers or kits containing 80% lowers to the following states:New Jersey..., Shop for high-quality 80 percent lower receivers made from billet or forged aluminum at Daytona Tactical. Build your own custom AR-15 or AR-308 without a background check or serial number., Aug 15, 2022 · The Billet AR-15 80% Lower Receiver from 80 Percent Arms has an ultra-tough design to withstand the harshest environments in any situation using. Made from aircraft-grade billet aluminum giving this receiver excellent durability and strength. The Flat Dark Earth Cerakote Coating is an exact match to the Magpaul FDE color. , Raw - .308 DPMS BILLET 80% Lower Receiver. Are you building your own AR-10 or other .308 caliber rifle? Shop for your 80 percent .308 lower right here at Thunder Tactical. This 80 percent lower receiver is the perfect lower for your build. To complete this lower, the following will need to be..., Product Description. Reviews. Includes five 80% lowers. Machined from 7075-T6 Aluminum Forging. 8625 Type III Hardcoat Anodize – Black. CNC Machined to Mil-Spec tolerances. Magazine Well Broached. Fits All Mil-Spec Upper Receivers. Shop our AR-15 Black 5 Pack 80% Lowers for a cost-efficient way to build your custom firearm., AR-9 ECO Lower Receiver, 80%. $99.95 - $134.95. Choose Options. Quick view Compare . JL Billet. AR15 80% Eco Billet Lower. $59.95 - $94.95. Choose Options. Quick view Compare . Extra Features Parts Kit for 80% Lowers $7.00. Add to Cart The item has been added. Close ×. OK. STAY CONNECTED ..., This rule attempts to restrict the manufacturing, sale, and ownership of unfinished 80% lowers, 80% frames. Under this rule, 80-Lower.com and other, similar businesses are restricted from selling some of our products to customers across the country. Attempts to Restrict 80% Lowers. In the ATF's Final Rule are new restrictions …, Additionally, this is a very durable choice of 80 percent lower receiver and functions well in your AR build for a very long time. It’s also one of the most popular choices of lower receivers purchased, and we think a great example of one is the… Matrix Arms – AR-15 80% Lower Receiver Forged. 2. Polymer Construction, I'm having some very discouraging problems with my 80% builds… I bought a couple 80% lowers and jig from 80-lower.com and the blank lowers came with the ..., What are Blemished 80% Lowers? Blemished 80% lowers are lower receivers that have minor cosmetic imperfections. These imperfections do not affect the performance, durability, or safety of the product. These blemishes are minor and vary, including minor scratches, uneven paint, small dents, and other small imperfections that are purely cosmetic. , In today’s globalized world, staying connected with friends, family, and business partners across borders has become more important than ever. However, international calling can of..., The James Madison Tactical Lower Gen 2 is one of the best-reviewed polymer AR-15 lowers in general, including not just 80% lowers, but also stripped lowers and complete lowers. It’s not uncommon to see this lower at 3-Gun and Precision AR competitions. Basically, it’s just a really great lower., Less drilling, drill only 1 hole prior to milling. World’s fastest jig. Jig requires no disassembly of side walls to insert or remove 80% lowers. 80% lowers can be inserted or removed in under 10 seconds. Easy. Built-in measuring gauges. No measuring tools needed. No drill press needed, only a hand drill and handheld router., Are you tired of paying high energy bills every month? If you’re a Dominion Energy customer, there are several strategies you can implement to lower your energy rates and save mone..., Jan 12, 2015 ... Got the email a few minutes ago from Ares Armor. 80 Percent AR-15 Lower Receiver Raw - Ares Armor. Guns. What Guns? Veteran ..., Polymer80 RL556V3 - RHINO 80% AR15 Lower Receiver with Jig. Was: Now: $129.99. 18 of 18 Items. Ready to build a gun from scratch? Build an AR-15, AR-10, 1911, Sig P320, or Glock®-compatible handgun with your own tools and know-how? Then you need an 80% lower jig. This is the tool you'll use to machine your AR's receiver blank or your new ..., Black Anodized Billet .308 80% Lower Receiver. $139.99. QTY: get 5% off Buy 3 - 4. get 10% off Buy 5 - 10. get 15% off Buy 11 - 20. We received permission from the Federal Court to sell this item. State Restrictions apply. READ MORE., 80% AR-15 Lower receiver Bulk 5 Pack Black Anodized. 4.93 out of 5. $ 399.75 $ 234.95. In stock. Select options., 80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. INCREDIBLY PRECISE We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum., 80 Lower. Was: $69.99. $39.99. Looking for 80 AR-15 Lowers? This is the most commonly built and the lower that started it all. Precision machined, 7075 forgings, shipped to your door., This 80 percent lower is exclusive to those who use .223 caliber rounds for their AR-15 rifles. One of the things that stands out is that it’s made from high-quality polymer. In other words, it’s pretty durable. It can handle being thrown around, kicked around, or scuffing up. It won’t scratch and it surely won’t break easily., The bill, known as HB 1739, was introduced on March 4, 2019. The Senate passed it on April 16. On May 7, the Washington Governor signed a law, which took effect on July 1, 2019. This bill affects 80 percent lowers, polymer firearms, 3D-printed firearms, schematics, and the AR-15 as a whole. Here is what is the bill says:, SB23-279 was signed into law on June 2nd 2023. According to the Colorado state senate bill, 80% lower receivers and frames will no longer be legal for residents of Colorado to manufacture, possess or sell 80 lowers or unfinished pistol frames beginning January 1, 2024. While 80 lowers may be legal per federal law, in June of 2021, Colorado ..., 80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. INCREDIBLY PRECISE We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium …, An 80% lower is a slang term for a type of lower receiver. Contrary to popular belief, it’s not something that was made up by government agencies like the ATF. Like the name, this lower receiver covers up 80 percent of the lower half of your AR-10 rifle. Despite some saying that it’s considered a firearm, a stand-alone 80% lower is not …, The AR lower parts assembly includes the following: Stripped lower receiver, or fabricated 80% Lower. Lower parts kit. Buffer tube. Buffer and recoil spring. Pistol grip. Castle nut. Latch plate. Grips, castle nuts, and latch plates are typically included in the lower parts kit., Find the best deals on 80% lowers, AR parts, handgun parts, accessories and more at 80-Lower.com. Shop now and get fast shipping, customer service and expert advice., 80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. INCREDIBLY PRECISE We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum. , Find a variety of 80% lower receivers for AR-15 and AR-10 rifles at Thunder Tactical. Save on black, raw, forged, skeleton, and cerakote 80% lowers in different colors and packs., All machining processes for our billet SR25 style AR-10 80% Lower are completed other than drilling/milling the FCG (Fire Control Group) pocket and trigger slot, and drilling the Selector switch, Trigger and Hammer pin holes. – Compatible with most SR25 type profile upper receiver. – CNC Machined from 6061-T6 Billet Aluminum., For any questions regarding orders, shipments, returns, refunds, exchanges, or other restrictions, please find our Terms & Conditions below. You may also call or email us. A customer service representative will respond to you quickly, usually within 24 hours. 80-lower.com (AKA Tactical Gear Heads, LLC) reserves the right to cancel any order, at ..., 80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states. INCREDIBLY PRECISE We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.