Complete Uppers

The shortest of the non-NFA models with a removable muzzle device, the Primary Weapons MK216 Rifle is perfect for those wanting to suppress their MK2 rifle. The MK216 is designed for a multitude of uses and retains lethal capability out to 800 meters...

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...

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...

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...

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...

Spikes complete upper assemblies will arrive to you inspected, tested, and ready to drop-in and go to work. Spikes maintains the same high standard of tolerances and attention to detail as the uppers they use for complete rifle builds. Every built upper...

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...

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...

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...

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...

The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on. The complete upper comes with everything one needs.

Super Duty MOD1 Complete Upper, 10.3", 5.56mm - Black  The Geissele Super Duty MOD1 Upper (Complete) represents the latest advancements in weapon technology exclusively from Geissele Automatics. This 10.3” complete upper is chambered in 5...