Griffin Armament Mini Blast Shield/ Optimus TM MID. Griffin Armament built these Gun Parts from incredibly durable 17-4PH stainless steel that can withstand full auto weapons for a long lifetime of use. This Griffin Armament Taper Mount Minimalist Blast Shield Muzzle Device is treated with a Melonite QPQ finish that enhances its durability and the ergonomic flutes provide a reliable grip. Get the Griffin Armament Taper Mount Minimalist Blast Shield (Without Thread Protector) to protect yourself and others from the harmful sounds of powerful firearms. Specifications for Griffin Armament Taper Mount Minimalist Blast Shield: Manufacturer: Griffin Armament Caliber: .308 Winchester Weight: 5.4 oz Fit: Griffin Taper Mounts Finish: Melonite QPQ Condition: New Projectile Caliber: .308 Caliber Fabric/Material: 17-4 Stainless Steel Features of Griffin Armament Taper Mount Minimalist Blast Shield: 17-4PH stainless steel material Melonite QPQ finish Compatible with Griffin Taper Mounts Significantly reduces concussion Ergonomic Flutes for grip Voluminous body allows for muzzle device performance Fast attachment / Detachment DOES NOT include thread protector Package Contents: Griffin Armament Taper Mount Minimalist Blast Shield Griffin Armament GAMMBS: Mini Blast Shield/ Optimus TM MID