NcSTAR AR-15 Upper Receiver Block for Maintenance Tasks

NcSTAR AR-15 Upper Receiver Block is a versatile tool for maintenance tasks. Its modular design allows use of the lower half for clamping the upper receiver to a vise using provided pins or bolting both halves together for full support, preventing damage during barrel work. Compatible with optics mounting, it features a bore brush guide for cleaning and is made of durable blue anodized aluminum for reliability.