Complete Uppers

Geissele Automatics, Super Duty MOD1 - Complete Upper Receiver - 556NATO - 16" Barrel - 1:7 Twist -HUXWRX Flash Hider-QD 556 The Geissele Super Duty MOD1 Upper (Complete) features the latest in weapon technology available exclusively from...

Harrington & Richardson Retro 635 Upper 10.5" 9MM 1/10, Gray The H&R Gray Retro 635 9mm is bringing the 80’s back! This 9mm Carbine has what it takes. Styled after the original AR SMG, and while it’s compatible with all Colt-style...

Primary Weapons Systems MMK116 MOD 1-M Upper Receiver - 223 Wylde - 16.1" Barrel w/ Triad30 Muzzle Device - Black Finish The MK1 MOD 1-M line, revamped for 2018, features the PWS long stroke piston system. Internally, this line offers the tried and true...

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 exclusive to this line. Starting with patent pending PicLok...

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 variety of features exclusive to this line. Starting with patent pending PicLok technology on the free...

Primary Weapons System MK116 Mod 1-M Upper Receiver 7.62x39mm- 16" Barrel The MK116 MOD 1-M Upper equipped with the renowned PWS long-stroke piston system, maintaining the reliability that PWS owners have come to trust. This line features a free-float...

Daniel Defense - DD4 7.0 - URG - 11.5 FSP Barrel - 1/7 Twist - 5.56/.223 - Black The Contract Overrun upper receiver group is built for maximum maneuverability with its 11.5" Government-profile barrel and Carbine length gas system, ensuring...

This EPC-9 Complete Upper Receiver comes standard with 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...

The DD4 RIIIS AR15 style Upper Receiver Group is built around a 11.5 inch Cold Hammer Forged Government Profile barrel with a Daniel Defense Flash Suppressor, a GRIP-N-RIP Charging Handle, and their carbine length gas system. It features a 10.5 inch...

The Triarc Systems TSR-15 SPR Upper seeks to redefine what a factory SPR barreled assembly can be; incorporating the most functional component choices possible, Triarc System has invigorated the tried and true concept of a 16" suppressed 5.56 rifle...

This complete upper includes our 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. Our proprietary ATLAS attachment system is a durable and...

SIG SAUER MCX-SPEAR LT UPPER/CONVERSION. KIT 7.62 X 39MM Compatible w/any MIL-SPEC AR-15/M4 Compatible w/MCX, M400 & 516 Upgrade any M4/AR15 into an MCX-SPEAR LT. The MCX SPEAR LT developed for the SF community is the most advanced platform...