Upper Receivers & Conversion Kits

Advantage Arms Conversion Kit: Convert your 9mm/.40 S&W Glock down to 22lr so trips to the range dont break the bank. The MOD series is meant to fit Glock 19/23 Gen 1-3 and includes two 10 round magazines, a 4.02" barrel, a range bag, and a recessed cut...

Convert your 1911 into a .22 or with an Advantage Arms conversion kit. Advantage Arms 1911 Target Conversion Kit is Advantage Arms most accurate conversion kit. The barrel is fixed solid to the frame with the sights mounted to the barrel. Accuracy is...

CMMGs Upper Receiver Assembly is made from billet 7075 T6 AL, and ships with Mk3 charging handle assembly.Features :For AR10 riflesBillet 7075 T6 Aluminum, Cerakoted Armor Black

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...

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...

The Daniel Defense M4 V7 LW Upper Receiver Group is built around a Cold Hammer Forged 16" Lightweight profile barrel-which is two ounces less than a standard V7 barrel-and equipped with a DD improved Flash Suppressor to reduce flash signature. It...

Advantage Arms Conversion Kit: Convert your 9mm/.40 S&W Glock down to 22lr so trips to the range dont break the bank. The MOD series is meant to fit Glock 19/23 Gen 1-3 and includes two 15 round magazines, a 4.02" threaded barrel, a range bag, and a...

The Daniel Defense M4 V7 Upper Receiver Group is built around a Cold Hammer Forged 16" Government profile barrel and equipped with a DD improved Flash Suppressor to reduce flash signature. It features a mid-length gas system for smooth, reliable cycling...

The Non-Reciprocating Charging Handle (NRCH) assembly upgrade kit gives current FN SCAR Owners even more adaptability and modularity for their rifles with new, nonreciprocating, dual charging handles, enabling any shooting position, grip style or optic...

The Non-Reciprocating Charging Handle (NRCH) assembly upgrade kit gives current FN SCAR Owners even more adaptability and modularity for their rifles with new, nonreciprocating, dual charging handles, enabling any shooting position, grip style or optic...

Unique auxiliary barrel system that is designed to give the user the option to train with other calibers especially when the stopping and incapacitation power of the 7.5 FK is not required. Our barrel system incorporates a simple barrel change procedure...

The Multi-Caliber modularity of the MDRX is what sets it years ahead of the competition. Caliber conversions can be done with minimal tools and in less than a few minutes. The Desert Tech MDRX Conversion Kit comes with everything you need to switch your...