Complete Uppers

The Daniel Defense M4 V7 S Upper Receiver Group is built around a Cold Hammer Forged 11.5" Government profile barrel and equipped with a DD improved Flash Suppressor to reduce flash signature. It features a carbine length gas system for smooth, reliable...

Use what "THEY" use. The Daniel Defense MK18 Upper Receiver Group features the railed forend Daniel Defense currently provides to USSOCOM and a 10.3" Cold Hammer Forged Barrel. The MK18 Rail Interface System (RIS II) features the Bolt-Up System has...

M4E1 Threaded 10.5" 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard. This complete upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your...

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...

Knights Armament Company, SR-15, Mod2, Complete Upper, 556NATO, 16", Black, Upper Receiver Extending Free Floating Barrel System, Upper Receiver Assembly E3 Mod 2, SR-15, M-LOK Barrel: 16.1" (40 cm) 1:7 Twist, Hammer Forged, Chrome Lined Caliber: 5...

Primary Weapons System - MK111 MOD-2M .223 Wylde Upper - 11.85" The PWS MK1 MOD 2-M line, revamped for 2018, features the PWS long stroke piston system. While the internals remain the same as other PWS lines, the MK1 MOD 2-M offers a variety of features...

PWS MK109 MOD 1-M Upper .300 BLK Revolutionize Your Firepower The PWS MK109 MOD 1-M Upper .300 BLK is the superior choice for civilians and law enforcement alike. This line features the PWS long stroke piston system, a tried and true system adored by...

***UPDATED*** Preorder - Expected release date is May 2024 ***  SIG SAUER is proud to introduce the MCX-SURG (Suppressed Upper Receiver Group) Upgrade Kit. Designed to meet the highly-specialized needs of USSOCOM, the MCX-SURG Kit was developed to...

SOLGW Patrol Upper 556 13.7" - Unmatched Performance, Durability, and Precision Introducing the SOLGW Patrol Upper 556 13.7", a top-of-the-line complete upper receiver designed for those who demand exceptional performance, reliability, and precision in...

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...

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...

This complete upper includes our new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Our proprietary ATLAS attachment system is a durable and...