The NcSTAR VTHAR10UVB .308 Upper Receiver Vise Block for AR10 is designed to offer unbeatable support for your AR10 upper receiver, preventing damage during crucial barrel changes. This vise block features a unique two-part design, allowing for secure fastening and stability while keeping your optics rail available for accessories. Crafted from durable blue anodized aluminum, it stands up to rigorous use and includes a bore brush guide for straightforward maintenance. Robust design prevents torque twisting forces during barrel change. Top half fits exactly into the AR10 receiver. Lower half attaches securely with high-strength steel bolts. Features a bore brush guide for easy cleaning. Durable blue anodized aluminum construction. Compact dimensions: 8.4"L x 3.1"H x 2.0"D. Lightweight at just 29.0 oz. Optimize your AR10 maintenance with the NcSTAR VTHAR10UVB-precision support made for serious performance.