Midwest Industries Muzzle Device Collar SIG MCX .300 AAC - 4140 Steel Phosphate

The Midwest Industries Muzzle Device Collar is purpose-built for the SIG MCX in .300 AAC Blackout and resolves one of the platform's most common fitment issues. SIG's tapered MCX barrel shoulder prevents many aftermarket muzzle devices from seating square against the barrel, and this collar converts that taper into a clean 90-degree shoulder so standard muzzle devices tighten down and lock up properly.

Machined from 4140 steel and protected by a phosphate finish, the collar is built to handle the heat and fouling associated with regular .300 BLK firing schedules without complaint. It threads onto the existing MCX barrel and provides the correct shoulder geometry to support your chosen muzzle device.

Proudly Made in the USA by Midwest Industries, the MI-MCX762S is the direct solution for getting your SIG MCX .300 AAC running the muzzle device you actually want to run.