- Officially licensed with BCE (Battle Comp Enterprises) engraved on the muzzle. - Integrates well with the PTS MK18 mock suppressors. - Heat treated CNC machined steel prevents blemishes and abrasions. - Constructed with a high quality matte black oxide finish. - Rotates with a 14mm clockwise threading. - Crush washer and a shim kit included for proper alignment. In the Box 1X Muzzle Device 1X Crush Washer 1X Shim Kit Specifications: Material CNC Machined SteelThreading 14mm ClockwiseModel 51.0ColorBLACK California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov