Firearm Gun Uppers and Conversion Kits for ARs and other rifles. Building your own gun? Looking to change the look of your current AR-15? Click-Click-Boom has hundreds of upper receivers for your rifle as well as tons of conversion kits for your guns. All of the firearm conversion kits found here are manufactured to be compatible with a wide range of guns and come complete with everything you need to change from a 5.56 to a .300 or any other popular conversion.

Upgrade your handgun to accept a conversion kit with a pistol brace. CAA Micro Roni is the most popular conversion kit on the market. If you don’t see your brand/model of handgun below, simply reach out and we can get it for you.

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