GORILLA MACHINING AR-15 .223/5.56 RIFLE KIT
AR-15 .223/5.56 Rifle Kits
The AR-15 rifle is the United States' most popular rifle and pistol formatted gun for a great reason! The .223/5.56 NATO calibers have been proven in civilian, law enforcement, and military applications worldwide. These AR rifle kits come with full M-LOK rails, barrels, gas blocks, charging handles, forward assist, and other crucial parts to make sure you can completely build out the AR-15 upper right out of the box! The .223/5.56 NATO round is known for its ultra-high speed velocity going approximately 3000+ FPS (feet per second) out of a 16-inch barrel, being one of the fastest rounds to ever exist out of a rifle. At Gorilla Machining, we have the best AR build kits available on the market with all the necessary parts to build out your dream custom AR rifle.