Black Rain Ordnance Black Rain BRO-22 A2 Thread Protector 1/2x28 Black 95B99D7D IR. Equipped with 1/2 28 threads and nitrided steel; ready for every day use and all elements. Specifications for Black Rain Ordnance Black Rain BRO-22 A2 Thread Protector 1/2x28 Black 95B99D7D: Manufacturer: Black Rain Ordnance Fabric/Material: 4140 Nitrided Steel Features of Black Rain Ordnance Black Rain BRO-22 A2 Thread Protector 1/2x28 Black: Designed to protect threads Add a unique look to your BRO-22 barrel Equipped with 1/2 28 threads Nitrided steel Ready for every day use Ready for all elements Package Contents: Black Rain Ordnance Black Rain BRO-22 A2 Thread Protector 1/2x28 Black This in-house manufactured A2 muzzle device is designed to protect threads as well as add a unique look to your BRO-22 barrel. Equipped with 1/228 threads and nitrided steel; ready for every day use and all elements. IRBRO22A2BLK