AAC 64141 BO/FH 5.56 51T 1/2X28

This AAC Blackout AR-15 Flash Hider is an extremely efficient design that effectively eliminates muzzle flash even on short barrels. The open-end 3-prong design of the Blackout is inherently stronger than 4-prong units and is not subject to the wear and erosion commonly encountered with closed-end designs. All Blackout flash suppressors are machined from high strength aerospace steel alloy and coated in a hard durable corrosion resistant SCARmor finish. This 51T Blackout flash hider works in conjunction with AAC's improved ratchet mount sound suppressors. The 51-T mount is an intuitive lightning fast silencer attachment/detachment system that allows for secure installation of a suppressor in less than 3 seconds with no tools or moving parts. Not compatible with the older spring mount (18-Tooth) or newer ratchet taper mount (90-Tooth) sound suppressors. Caliber: 22 Cal/5.56mm - Thread Pitch: 1/2-28 - Common Firearm Use: AR-15 Bushmaster ACR - Length: 2.5 - Length Added to Barrel: 1.875 - Weight: 4.3 oz - Finish: SCARmor - Silencer Mount: 51T Ratchet Mount - AAC Silencer Compatibility: ACR-SD 416-SD 249-SD Post-2007 M4-2000 Mini 4 Post-Mid 2010 7.62-SD 7.62-SDN6 Mini 7