Home / AR Upper Components / FAIL ZERO M16/M4 BOLT CARRIER GROUP NICKLE BORON BCG View cart “LBE Unlimited ARFPN – Firing Pin” has been added to your cart. FAIL ZERO M16/M4 BOLT CARRIER GROUP NICKLE BORON BCG$149.99 1 in stock [] FAIL ZERO M16/M4 BOLT CARRIER GROUP NICKLE BORON BCG quantity Add to cart UPC: 881314861781 SKU: 009-FZM16/4-01-NH Category: AR Upper Components Product ID: 11706 Related products Out of stock Bravo Company Manufacturing BCMGUNFIGHTER Ambidextrous Charging Handle Mod 4×4 – Medium Latch $79.95 Read more Bravo Company Manufacturing BCMGUNFIGHTER Ambidextrous Charging Handle Mod 3×3 – Large Latch $89.95 Add to cart SPRINCO ENHANCED CHROME MOLY EJECTOR AND SAFETY SPRING $4.39 Add to cart FORWARD CONTROLS DESIGN LDFA-AA LOW DRAG FORWARD ASSIST BLACK NITRIDE DIMPLED $39.99 Add to cart