Complete Uppers

MK18 RIII™ UPPER RECEIVER GROUP The MK18 AR15 style Upper Receiver Group is unmatched in size, weight, and performance, and features the new Daniel Defense RIS III rail.  The lightweight RIS III rail—modeled after the revolutionary...

Primary Weapons Systems MK116 MOD 2-M Upper Receiver Fits AR-15 223 Wylde 16.1" Barrel 1:8" Twist The PWS MK1 MOD 2-M line features the PWS long stroke piston system. While the internals remain the same as other PWS lines, the MK1 MOD 2-M offers a...

Aero Precision M4E1 Threaded 16" 5.56 Pencil Complete Upper Receiver w/ ATLAS R-ONE Handguard (APAR700705M39) This complete upper includes our new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still...

10.5” Gen 3 Shorty 5.56 CHF Complete Upper Barrel 10.5” 5.56mm 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...

Noveske Chainsaw 10.5” Shorty Complete Upper (03000527) Barrel 10.5” 5.56mm or 300BLK 416R Stainless with 1:7 twist Individual serialized barrel for QC purposes Hand polished Noveske Match Chamber Carbine length gas tube...

Noveske CHAINSAW 16" 5.56 Complete Upper (03000523) Barrel 16” 5.56mm 416R Stainless with 1:7 twist Individual serialized barrel for QC purposes Hand polished Noveske Match Chamber Mid length gas tube system Noveske marked gas block: Low...

Sons of Liberty Gun Works M4-89 10.5" Complete Upper Sons of Liberty Gun Works is committed to delivering high-quality Mil-Spec or better parts for your firearm. Every component is designed to provide the reliability, durability, and performance you...

Knights Armament Company, SR-15, Carbine Mod2, Complete Upper Receiver, 556NATO, 14.5" Hammer Forged Barrel, Black Finish, MLOK The SR-15 E3 Mod 2 series' 5.56 mm NATO barrel is manufactured for military grade durability, and is free-floated inside a...

Due to popular demand, YHM is pleased to offer the Turbo® Integral Suppressor System. The Turbo® Integral comes with an integrated Turbo® T2 suppressor which is pinned and welded to a 10.5” 5.56mm barrel. With a combined...

Primary Weapons Systems, MK109, MOD 2-M, Upper Receiver, Fits AR-15, 300 Blackout, 9.75" Barrel, 1:8" Twist, PWS Triad Muzzle Device, 8.9" PWS PicLok MLOK Handguard, Anodized Finish, Black, Includes Radian Raptor Ambidextrous Charging Handle The PWS MK1...

The Complete Upper is constructed of billet machined 7075-T6 aluminum with proprietary Extended aluminum hand guard w/ Magpul M-LOK mounting system and integrated upper/hand guard stainless steel anti-rotation pin. Its match grade 416R stainless steel...

This complete upper includes our new 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...