This Faux Suppressor/flashcan was designed for those in states that cannot have a suppressor and would like the look. Can be fired through while installed on weapon. Unit is 6.5in & 1.2in diameter. Adds 5.85in to the end of barrel Threaded in 1/2×28 thread pitch to fit most all AR15 (5.56×45 / .223) barrels or any 22 caliber barrel with 1/2×28 threads. This authentic looking flashcan/faux suppressor is solid anodized aluminum per BATF Specs. & cannot be taken apart