Whether you’re looking to build a AR15 for plinking training or small-game hunting this .22 LR RESOLUTE® Upper Group fits the bill perfectly. The Mk4 .22 LR upper is designed to work with any standard AR15 lower and our .22 Conversion Magazines. All CMMG® Upper Groups come complete with bolt carrier group and ZEROED™ accessories including:
ZEROED AR15 Polymer Dust Cover
ZEROED 22LR Ambi Charging Handle
ZEROED Muzzle Brake 5.56mm
