Wilson Combat Q-Comp Brake/Compensator 5/8x24. The Q-Comp is a hybrid AR-15 brake/compensator that has been tuned to minimize side-blast and concussion compared to other muzzle devices on the market. This exclusive Wilson Combat design displays almost zero muzzle flash yet retains excellent vertical and rearward recoil reduction with all calibers. The slotted expansion chamber design of the Q-Comp has no prongs or tines to break off or snag and is Melonite QPQ coated alloy steel for maximum durability and corrosion resistance. The Q-Comp is easily installed on your AR rifle using the included crush washer. Specifications for Wilson Combat Q-Comp 11/16x24 Muzzle Brake: Manufacturer: Wilson Combat Gun Model: AR-15 Length: 2.2 in Weight: 2.2 oz Condition: New Diameter: 0.875 in Package Contents: Wilson Combat Q-Comp Brake/Compensator What firearm models does the manufacturer say Wilson Combat Q-Comp 11/16x24 Muzzle Brake is compatible with? The manufacturer says that Wilson Combat Q-Comp 11/16x24 Muzzle Brake is compatible with AR-15Wilson Combat TR-QCOMP-58X24: Q-Comp Brake/Compensator 5/8x24