Lyman MSR Ammo Checker Block, Black - 7833003

The Lyman MSR Ammo Checker Block is a precision gauge machined from 6061 T6 aircraft-grade aluminum with a black anodized finish, designed to verify the quality and consistency of both handloaded and factory ammunition. It features custom tooling cut to minimum chamber dimensions and covers multiple modern sporting rifle calibers including .223/5.56, 6.5 Grendel, 6.8 Rem SPC, 7.62x39, and .300 AAC Blackout. This tool is essential for reloaders and AR shooters to prevent chambering issues and mis-feeds.