Gun Parts

With over 100,000 parts in stock, Primary Arms is your ground zero for gun parts and all things firearm related. Specializing in rifle parts, and AK-47 gun parts, Primary Arms carries gun parts for everything from handguns to AR-15s & 308s. Browse our selection of barrels, gas blocks, slings, stocks, and more by scrolling below or selecting a filter on the left to search by part type.