The Low Mass Bolt Carrier Group is NOT full auto capable.The Low Mass Sharps Xtreme Performance Bolt (XPB) Carrier Group Complete is comprised of our patented Relia-Bolt™ and our Special Low Mass Balanced Bolt Carrier. Low Mass Carrier is 1.7 ounces lighter than the Full Mass Carrier. Ma..
The Ultra Low Mass Bolt Carrier Group is NOT full auto capable.The newly designed Ultra Low Mass Sharps Xtreme Performance Bolt (XPB) Carrier Group Complete comprises our patented Relia-Bolt™ and our Special Ultra Low Mass Balanced Bolt Carrier. The Ultra Low Mass Carrier is 2.3 ounces lighter ..