Shop › CMMG ZEROED LPK MK3 CMMG ZEROED LPK MK3 $134.95 CMMG Zeroed Lower Parts Kit, MK3, Lower Receiver Parts Kit with Ambi Safety Selector, Fits AR10, Black 38CA62B Quantity: Add To Cart Added! CMMG Zeroed Lower Parts Kit, MK3, Lower Receiver Parts Kit with Ambi Safety Selector, Fits AR10, Black 38CA62B