Hone your CMMG .22LR AR15 conversion kit for high-velocity ammunition. Slowing the bolt reciprocation increases reliability by reducing wear and dirt build-up, the weight will also reduce bolt bounce.

High-velocity ammunition is known to increase the rate of wear on the CMMG conversion kit, mainly due to the impact between the tail of the bolt and the rear rail plate, Maglaods bolt weight geometry reduces this phenomenon.

Tested with a large range of both standard and Hight velocity ammunition, this is a one size fits all solution. Competition proven at the highest level. Not compatible with subsonic ammunition.

Machined brass construction with hardened steel insert.