CMMG 55CA65A Receiver Extension Kit Black Buffer Tube, Carbine Buffer, Ambi Sling Mount End Plate, Fits AR-15 Pistol $55.38
CMMG S5CA642 Zeroed Lower Parts Kit Black Grip, Ambi Safety & Mag Catch, Mil-Spec Trigger, Fits AR-Platform/Mk4 $125.68
CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10", Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle) $499.88
CMMG 22D7C6C Replacement Barrel Kit with Bolt Carrier Group, 22 LR 16.10" Threaded, Black Nitride Chromoly Steel, Fits AR-15/Mk4 $332.50