Ideal for close quarters environments or shooting in teams, the Blastwave 3-Lug 9mm QD Blast Shield reduces concussive forces on the shooter and those nearby by redirecting the blast down-range. It offers quick detach compatibility with all 9mm barrels through the universal 3-lug interface. That means you can go from shooting suppressed to unsuppressed in seconds without sacrificing shootability. Pair the 3-Lug 9mm QD Blast Shield with any of our Tri-Series muzzle devices for an even better experience! Made from hardened steel with a black nitride finish Attaches via universal 3-lug mounting interface Pairs perfectly with our 3-Lug Flash Hider and 3-Lug Muzzle Brake 1.33" outer diameter (easily fits inside all Angstadt Arms handguards!) 2.5" long 6.5 oz