• Magazine-well insert for bench-vise clamping
  • Fits AR-15 / M4 mil-spec lower magwells
  • Stabilizes the lower for lower parts kit and buffer-tube assembly
  • Compact — sits flat in any standard 4" bench vise

Full details and secure checkout: https://3crtactical.com/lower-magwell-vice-block-137/?utm_source=armslist&utm_medium=referral&utm_campaign=listing