Lyman Multi Caliber MSR Ammo Checker Block

Lyman MSR Ammo Checkers are machined from solid blocks of 6061 T6 aircraft grade aluminum and cut with custom tooling to minimum chamber dimensions. Their black anodized finish matches your favorite “black” rifle. Check the quality and consistency of both loaded rounds and purchased ammo. A must for any AR shooter. You can’t afford mis-feeds, so get the easiest “Go” gauge available for modern sporting rifle calibers.

Features:

Fits/Checks Calibers: .223/5.56, 6.5 Grendel, 6.8 Rem SPC, 7.62x39mm, .300 AAC Blackout, .450 Bushmaster, .458 SOCOM & .50 Beowulf
CNC machined to minimum chamber specs
Confirm ammo will chamber smoothly