CMC Triggers AR-15 Upper Receiver Parts Kit
Also called a dust cover, and it does exactly what the name says: keeps dirt out of your upper when the rifle isn’t in use. This is a complete mil-spec AR-15 trapdoor kit, so you get the door assembly, the spring, the rod, and the C-clip all together. The rod is machined from stainless steel and finished in black nitride, which is a step up from the plain steel rods that tend to rust. It installs on any standard AR-15 upper.
California Proposition 65 WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov


