Home / AR Upper Components / FAIL ZERO 9MM NITRIDE BLACK “LBE Unlimited ARBGR – Bolt Gas Rings” has been added to your cart. View cart FAIL ZERO 9MM NITRIDE BLACK$179.99 1 in stock [] FAIL ZERO 9MM NITRIDE BLACK quantity Add to cart UPC: 094922269836 SKU: FZ-9MM-NITRIDE-BCG Category: AR Upper Components Product ID: 6346 You may also like… FAIL ZERO 9MM NITRIDE BLACK $179.99 Add to cart Related products Out of stock AERO PRECISION .308/762 BOLT CARRIER GROUP BLACK NITRIDE $234.99 Read more Out of stock SIONICS Gas Tube W/Roll Pin – Melonite – Midlength $16.95 Read more Out of stock SOLGW 5.56 BOLT CARRIER GROUP 158 CARPENTER SP/HPT/MPI $179.00 Read more LBE Unlimited ARFPN – Firing Pin $7.95 Add to cart