L.E. Wilson 300 AAC Blackout Min Chamber Gage

L.E. Wilson 300 AAC Blackout Min Chamber Gage. The L.E. Wilson Brass Min Dimension Gage is designed to verify that your finished rounds fall within SAAMI minimum chamber specifications before firing or use across multiple firearms. Manufactured with the same tight tolerances expected from all L.E. Wilson tools this gage checks minimum chamber dimensions and overall length (OAL). It is especially useful when loading ammunition intended to function reliably in multiple firearms of the same caliber