Complete Uppers

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...

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...

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...

MCX-SURG - Suppressed Upper Receiver Group *LIMITED RUN* 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 deliver...

The MK1 MOD 1-M line, revamped for 2018, features the PWS long stroke piston system. Internally, this line offers the tried and true system that PWS owners have grown to know and love. Featuring a free-float MLOK handguard, forward assist controls, and a...

DD4™ RIII™ UPPER RECEIVER GROUP - 23-191-20088-011 The DD4™ RIII™ Upper Receiver Group is built around a 16 inch Cold Hammer Forged Government Profile barrel, a GRIP-N-RIP Charging Handle, and our mid-length gas...

M4A1 RIII™ UPPER RECEIVER GROUP The M4A1 AR15 style Upper Receiver Group is built around a 14.5 inch Cold Hammer Forged M4 Profile barrel with a permanently attached Daniel Defense Flash Suppressor, a GRIP-N-RIP Charging Handle, and our...

Noveske CHAINSAW Complete Upper 5.56 10.5 Shorty (03000529) Barrel 10.5” 5.56mm 416R Stainless with 1:7 twist Individual serialized barrel for QC purposes Hand polished Noveske Match Chamber Carbine length gas tube system Noveske marked gas...

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...

SOLGW - EXO3 Complete Upper 16" Barrel - 5.56 Nato 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...