• Complete AR-15 bolt carrier group — fully assembled, ready to install
  • M16-profile (full-auto) carrier — legal in semi-auto AR rifles
  • 5.56 NATO / .223 Remington — drop-in for mil-spec AR-15 uppers
  • Bolt machined from Carpenter 158 steel — the standard mil-spec bolt alloy
  • MPI (magnetic particle inspected) and HPT (high-pressure tested) — defect screening on every bolt

Full details and secure checkout: https://3crtactical.com/phase5-bolt-carrier-group-m16-blk/?utm_source=armslist&utm_medium=referral&utm_campaign=listing