Ideal for close quarters environments or shooting in teams, the Angstadt Arms 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 Angstadt Arms Tri-Series muzzle devices for an even better experience! FeaturesMade from hardened steel with a black nitride finishAttaches via universal 3-lug mounting interfacePairs perfectly with 3-Lug Flash Hider and 3-Lug Muzzle Brake1.33a ^2 outer diameter (easily fits inside all Angstadt Arms handguards!)