Colt M4 5.56 Upper Receiver Groups

Add the Colt legend of reliability to your rifle or build with these complete feature 1/7 RH twist in a chrome lined, button rifled barrel. Available with or without a charging handle, bolt carrier group, and back up sights. All NFA rules apply. NOTE: "Stripped" does NOT include bolt carrier group (BCG), charging handle, or rear backup sight Mfg: Colt