CMMG Radial Delayed Blowback Action Tuning Kit

Whether you want the smoothest shooting carbine possible or are looking for added reliability while shooting hotter loads or suppressors, CMMG's Action Tuning Kit gives you the added flexibility to make your CMMG perform exactly how you like it. This optional Action Tuning Kit allows you to adjust the action to your preference much like changing buffers or changing gas port settings on an adjustable gas block. Small, Medium, and Large weights allow for you to test and find the right weight for y