Next Level Armament NLX-11B Muzzle Brake .450 Bushmaster 5/8x32 Nitride Black. Next Level Armament built these Muzzle Brakes & Compensators from 2.5in long to accommodate extended brake lengths. This Next Level Armament 450 Bushmaster Muzzle Brake Attachment will only work with 5/8in x 32 threaded barrels and is designed to greatly improve accuracy and allow you to take significantly more accurate follow-up shots. Equip your .45 ACP rifle with a Next Level Armament NLX-11 Muzzle Brake Attachment to mitigate recoil and muzzle rise so that you can take more precise follow-up shots on target. Specifications for Next Level Armament NLX-11B Muzzle Brake: Manufacturer: Next Level Armament Color: Black Projectile Caliber: .450 Caliber Caliber: .450 Bushmaster .45 ACP Finish: Nitride Fabric/Material: 4140 Steel Threads per Inch: 5/8x32 Gun Make: Universal Gun Model: Universal Barrel Material: 4140 Steel Outer Diameter: 0.88 in Length: 2.5 in Weight: 0.25 lb Condition: New Features of Next Level Armament Bushmaster Brake 450 Bushmaster 5/8 x 32 threads Package Contents: Next Level Armament NLX-11B Muzzle Brake What firearm models does the manufacturer say Next Level Armament NLX-11B Muzzle Brake is compatible with? The manufacturer suggests that Next Level Armament NLX-11B Muzzle Brake is compatible with UniversalNext Level Armament NLX504: NLX-11B Muzzle Brake .450 Bushmaster 5/8x32 Nitride Black