This one piece gauge for checking factory and re-loaded ammunition to ensure fit in firearms is crucial for the at home re-loader and gunsmith. This particular unit will allow you to check 9mm Luger, .40 Smith & Wesson, .45 ACP, and .38 Super cartridges in one easy convenient block. The block is made from aircraft grade 6061-T6 aluminum and features a nice anodized matte black finish. This block is used to compare cartridges against SAAMI chamber dimensions. Simply drop a loaded round into the gauge. If the round enters the gauge easily and fits flush with the top of the block the round will fit in the guns chamber.

Specifications and Features:
EGQ 4 Caliber Auto Ammo Checker 70100
Checks 4 types of auto loading ammo
9mm Luger
.40 Smith & Wesson
.45 ACP
.38 Super
6061-T6 Aircraft Grade Aluminum
Anodized Matte Black