SKU: 78102003
UPC: 050806113961
MPN: AZT-M4-556-ST-0
The M16 Bolt Assembly 5.56x45mm Nitride MP is a precision-engineered firearm component designed for operators who demand reliability in challenging environments. This bolt carrier group is essential for the cycling of your AR-platform rifle, responsible for chambering rounds, firing, and extracting spent casings with consistency.
The nitride finish applied to this bolt assembly enhances corrosion resistance and wear characteristics compared to standard finishes, extending component life through thousands of firing cycles. This treatment is designed to improve durability and performance, making it suitable for rigorous use.
This bolt assembly integrates seamlessly into compatible AR-15 or M16-pattern upper receivers, making it a valuable addition for armory stock or duty rifle rebuilds. It ensures proper headspace and function with 5.56 NATO ammunition, making it a reliable choice for serious marksmen.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.