NcSTAR AR10 Upper Receiver Block – Gunsmithing Tool for .308 Platform

The NcSTAR AR10 Upper Receiver Block is a gunsmithing tool designed to secure AR10/.308 pattern upper receivers during barrel installation, muzzle device work, and general maintenance.

• Platform: AR10/.308 upper receivers
• Use: Barrel installation, muzzle device work, upper receiver maintenance
• Mounting: Bench vise required (not included)
• Construction: Machined steel