The genuine Colt A2 "birdcage" flash hider — a factory take-off from a new Colt M4/M16 rifle, 1/2-28 thread, five slots timed off the bottom.
Colt receives carbine barrels with the A2 flash hider already installed at the factory. When Charlie's buys those barrels for builds that ship without the flash hider, the hiders come off intact — brand-new Colt parts that have seen nothing but Colt's factory proof firing. They are the correct device for a clone-correct M4, M4A1, or A2-era 5.56 rifle and work equally well on civilian 16" AR-15 builds where the builder wants a factory-timed A2 bird rather than a third-party copy.
A crush washer is required and is not included. Colt builds parts for military end-use, so expect honest machining marks and a utilitarian finish — this is a combat device, not a show piece. Order yours today and we'll square you away.