Our MMC Armory AR-15/LR-308 Upgrade Kits make it easy to turn your standard firearm into something personalized, with a custom look and feel. We offer trigger upgrades, folding stock adapters, captured buffer springs, and much more. Some of the brands featured are Armaspec, Sylvan Arms, Hiperfire, Rise Armament, among many others. Give your firearm a luxury feel or get it ready for competition. Keep an eye out for MMC Bundles to save even more.