Complete, .223/5.56mm AR-15 bolt and carrier assembly comes with all the parts, fully assembled, and ready to go. Drop it in your Milspec AR  and you’re ready to shoot. Precision-machined carrier and bolt manufactured for us to our specifications. True Mil-spec dimensions with M16 Carrier cut ensure proper fit and function in a wide variety of OEM and aftermarket upper receivers.

Feel free to ask all the question you have. We take the time to answer them all!