The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. The widest range of shooting accessories at very competitive prices with products are backed by our customer service & extensive product knowledge. Due to overwhelming demand, we are experiencing a 8-10 business day delay in shipping standard packages and FFL orders are 10-14 days delayed. The Aero Precision 2018 October Builder Set features an M5E1 set with a Ammo Can finish done by Blown Deadline. A threaded bolt catch roll pin offers simpler installation of the bolt catch and virtually eliminates the possibility of damage to the receiver finish during installation (pin included). For the best experience on our site, be sure to turn on Javascript in your browser. Our mission is to give you and your personal needs our undivided attention so that we can equip you with exactly what you need for your specific situation. If a frame or receiver can only be made into a long gun (rifle or shotgun), it is still a frame or receiver not a handgun or long gun. For shooters, by shooters. It's been a long time coming. Click the button below to see our available length options and to learn more about why these handguards are better than the competition. Machined to mil-spec dimensions, our lowers work with standard AR15 components and ensure the highest quality with a correct component interface. Our first handguard design is live and ready for sale! If you can add an item to your cart and checkout successfully, it's yours and will ship soon! This provides a tight fit with any standard AR15 upper receiver. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to accept a standard AR15 barrel nut. It may help us acquire a copy of the FFL and get your order shipped out more quickly. Weapon Outfitters was launched to provide premium parts and accessories for America's favorite weapon platforms. Bexar Arms uses an inventory system that updates in real time. Integrated Trigger Guard - Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon. Please Note: All items in this order will be shipped together. M4E1 Threaded Assembled Upper Receiver in Magpul™ FDE Cerakote M4E1 Lower Receiver Features: Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). As a small shop, our goal is not to arm the entire US Military. A lightweight BCG is designed for a tuned rifle and a builder who’s willing to toss an adjustable gas block on and really tune the gun system. However, they still are "firearms" by definition, and subject to the same GCA limitations as any other firearms. Get the latest updates on new products and upcoming sales. This is a controlled item and requires shipping to an authorized and valid Federal Firearms License (FFL) holder. Our Enhanced M-LOK Handguards provide a lightweight free float design for your custom M5 .308 build. The M-LOK system allows advanced modularity past the current 1913 picatinny rail system. Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This enhanced forging is machined from 7075-T6 aluminum and compatible with all Mil-Spec AR-15 parts. Shop M4E1 Threaded 16" 5.56 Mid-Length Complete Upper Receiver w/ ATLAS S-ONE Handguard and more at AeroPrecisionUSA.com! Federal law requires that you be 21 years of age or older to purchase a stripped receiver or frame. Only registered users can write reviews. Threaded Takedown Pin Detent Recess - Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room). M4E1 Threaded Assembled Receiver Set - FDE Cerakote, Skip to the beginning of the images gallery, M4E1 Lower Receiver in Magpul™ FDE Cerakote, M4E1 Threaded Assembled Upper Receiver in Magpul™ FDE Cerakote. eXcise Optimized AR-15 Handguards are LIVE! DetailsThe Aero Precision M4E1 Lower Receiver delivers billet aesthetics in a forged package. If you have non-FFL items on this order that you would like shipped directly to you, please place them on a separate order. If you do not have a copy of the FFL but you do have the dealer's email address, please add it in the comments field at checkout. Aero Precision's AR15 Gen 2 Stripped Lower Receiver is the perfect base for your custom AR15 build. Quality Equipment with Superior Service Above All Else, Superlative Arms .625" Adjustable Set Screw Gas Block - Melonite, 5.56 Bolt Carrier Group, No Logo - Nickel Boron, AR-15/M16 Enhanced Flat Wire Recoil Spring - Gen 2, BLEM eXcise Optimized 15" M-LOK® AR-15 Handguard, BLEM eXcise Optimized 13.7" M-LOK® AR-15 Handguard, BLEM eXcise Optimized 12.625" M-LOK® AR-15 Handguard, BLEM eXcise Optimized 10.5" M-LOK® AR-15 Handguard, Aero Precision "Click" Adjustable Gas Block - .625 Low Profile. Please. New enhanced forging that gives the upper receiver a "billet look", New picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards. There will be a 30% restocking fee for all controlled items returned due to a failed background check or a denied underage purchase. For the best experience on our site, be sure to turn on Javascript in your browser. 18 U.S.C. If you have a copy of the FFL, please email it to ffl@aeroprecisionusa.com. Our goal is to provide personalized customer service and the top-shelf components required by end users for professional and personal use. We want to help you build the perfect AR for your unique needs. Bexar Arms (pronounced "Bear" Arms) is a small shop with the mission to give you our undivided attention so that we can tailor fit a solution to your individual requirements. The heavier standard BCGs are better suited to running any kind of ammo through any kind of gas system. Section 922(b)(1) makes it unlawful for a licensee to sell any firearm other than a shotgun or rifle to any person under the age of 21. See Section 921(a)(3)(b). Increased Magwell Flare - Increased the flare of the magwell to aid in quick and efficient magazine changes. JavaScript seems to be disabled in your browser. Whether you're the dedicated peacekeeper, passionate hunter, serious competitor, or weekend warrior, we at Bexar Arms have meticulously chosen our offerings to give you the advantage you need to achieve your desired results. We started with the Aero Precision M4E1 Enhanced Arctic Camo Builder Set.