Angstadt Arms 3 Lug Wrench. Specifications for Angstadt Arms 3-Lug Wrench: Manufacturer: Angstadt Arms Fabric/Material: Hardened Steel Color: Black Finish: Black Nitride Condition: New Projectile Caliber: .355 Caliber Features of Angstadt Arms 3-lug Wrench 3-lug wrench allows for installation and removal of 9mm 3-lug muzzle devices Wrench allows for complete disassembly and reassembly of Angstadt Arms QD Blast Shield Made from hardened steel with a black nitride finish 1/2in opening for socket wrench attachment Package Contents: Angstadt Arms 3-lug Wrench Angstadt Arms AA093LBCWR: 3 Lug Wrench