Merchant Throat Erosion Gauge
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Merchant Throat Erosion Gauge, Presents a quick and accurate indication of barrel/throat wear. Use every 1,000 rounds to obtain a comparative reading of throat erosion. Provides match shooters and varmint hunters an easy, convenient method to determine remaining barrel life. Models for rifles chambered in .223, .30 M1 Carbine, and .30-06 M1 Garand. The other end of the Garand gauge is calibrated to measure bore erosion at the muzzle. Mfg: Merchant SPECS: Steel. Includes complete instructions. .223 - Also fits .222 and .22-250. 3 1/2" (8.9cm) long. .30 M1 Carbine - 21/16" (5.2cm) long.