Midwest Industries Muzzle Device Collar Features The Midwest Industries Muzzle Device Collar solves a specific fitment challenge on the Sig Sauer MCX platform by converting its factory tapered barrel profile into a 90 degree shoulder. This square shoulder gives standard muzzle devices brakes and flash hiders a proper index surface to seat against which the factory tapered design does not provide. Built from 4140 steel the collar is engineered to handle the heat and stress generated at the muzzle during firing. A phosphate finish protects the steel from corrosion while giving it a durable matte military-style appearance. Because this collar is made specifically for Sig MCX 5.56 models it installs with proper fitment and alignment without requiring custom machining. Expanding compatibility with standard thread pattern muzzle devices gives MCX owners far more aftermarket options for suppressor mounts brakes and flash hiders. Manufactured in the USA this collar reflects Midwest Industries reputation for quality AR-platform and MCX accessories. The Midwest Industries Muzzle Device Collar is available for sale at GrabAGun for Sig Sauer MCX 5.56 owners looking to expand their muzzle device compatibility. Midwest Industries Muzzle Device Collar Specifications Manufacturer: Midwest Industries Model: Muzzle Device Collar Material: 4140 Steel Finish: Phosphate Compatible Hosts: Sig Sauer MCX 5.56 Other Features: Converts Tapered Barrel to 90 Degree Shoulder Made in USA Available At: GrabAGun