Out of stock
SKU: UHFZM16401NH
UPC: 881314861781
MPN: FZ-M16/4-01-NH
The FailZero 5.56 Full Auto Bolt Carrier Group is a purpose-built component engineered for AR-15 platforms operating in demanding tactical, military, and law enforcement environments. Designed specifically for automatic fire applications, this bolt carrier group represents a critical upgrade for operators who require reliability under sustained fire conditions.
At the core of this design is FailZero's proprietary EXO coating technology, a salt-spray-tested finish that dramatically reduces friction and eliminates carbon buildup compared to standard parkerized or chrome-plated carriers. The carrier's construction is optimized for reliable feeding, extraction, and ejection across extended firing sequences, making it suitable for full-auto applications in specific platforms.
Operators in tactical and military settings benefit most from the FailZero 5.56 Full Auto Bolt Carrier Group when reliability cannot be compromised. This carrier fits standard M16/AR-15 upper receivers and is compatible with standard 5.56 / .223 bolts, ensuring versatility for a range of users.
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.
