Complete Uppers

This Aero Precision M4E1 Threaded upper receiver group comes completely assembled with 16” 5.56 barrel and the ATLAS S-ONE M-LOK handguard. This barreled upper receiver group does not include BCG or charging handle allowing you to choose your...

10.5” Gen 3 Shorty 300BLK CHF Complete Upper Barrel 10.5” 300BLK cold hammer forged with 1:7 twist Our chrome lined barrels are cold hammered forged and made with the material callouts and manufacturing process for the M249 Machine Gun...

M4E1 THREADED COMPLETE UPPER, 16" 5.56 MID-LENGTH BARREL, 15" ATLAS R-ONE M-LOK HG - ODG ANODIZED Shipping to FFL Dealer Required No Made In America: Yes Platform: AR15 Complete Upper Series: ATLAS Caliber: 5.56 NATO Barrel Length: 16 Finish: OD...

Primary Weapons Systems, MK111 Mod-1M Upper, Fits AR15, 223 Wylde, 11.85" Barrel, Black Color, Anodized Finish, PWS M-lok 6.9" Handguard The MK1 MOD 1-M line, revamped for 2018, features the PWS long stroke piston system. Internally, this line offers...

Geissele Automatics, Super Duty MOD1, Complete Upper Receiver, 556NATO, 11.5" Cold Hammer Forged Barrel, 1:7 Twist, HuxWrx Flash Hider-QD Muzzle Device, M-LOK Free Float Handguard, Geissele Airborn Charging Handle, Nanowepon Reliability Enhanced Bolt...

This complete upper includes our ATLAS R-ONE Handguard. The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS...

Aero Precision M5 16" .308 CMV Complete Upper Receiver with ATLAS R-ONE Handguard - OD Green Anodized Aero Precision APAR538772M22: The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to...

The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS attachment system is a durable and dependable mounting platform,...

Aero Precision APAR700396M29: This complete upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's...

Aero Precision APAR700396M29: This complete upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's...

Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. They believe a quality, accurate and...

Sig Sauer MCX Rattler 5.56 NATO 5.5" The Sig Sauer MCX Rattler Upper Receiver boasts a 5.5-inch barrel and a polymer handguard equipped with MLOK attachment points. It also sports a full-length picatinny rail to facilitate the easy installation of...