The QC-1 is a lightweight quad-baffle muzzle device made from titanium and designed to greatly reduce felt recoil. Three forward ports direct gasses rearward at a 60-degree angle for maximum recoil reduction. The primary baffle directs gasses perpendicular to the barrel bore helping divert rearward gasses away from the shooter. Specifications for NEMO Arms Signature Series QC-1 Muzzle Brake: Manufacturer: NEMO Arms Color: Silver Caliber: .30 Carbine, 7.62x39mm Finish: Bead Blasted Matte Fabric/Material: 6AL-4V Titanium Threads per Inch: 5/8x24 Gun Make: AR Platform Gun Model: AR-10 Outer Diameter: 1 in Length: 3 in Weight: 2.63 oz Gun Type: Rifle Package Contents: NEMO Arms Signature Series QC-1 Muzzle Brake Which weapon models is NEMO Arms Signature Series QC-1 Muzzle Brake compatible with? NEMO Arms Signature Series QC-1 Muzzle Brake is compatible with AR-10