MIL-STD-1258, MILITARY STANDARD: COMPARISON STANDARDS FOR CHROMIUM PLATED 5.56MM, 7.62MM, AND CALIBER .30 SMALL ARMS BARREL BORES (30 JUN 1972) [NO S/S DOCUMENT]

MIL-STD-1258, MILITARY STANDARD: COMPARISON STANDARDS FOR CHROMIUM PLATED 5.56MM, 7.62MM, AND CALIBER .30 SMALL ARMS BARREL BORES (30 JUN 1972) [NO S/S DOCUMENT]., This document establishes visual comparison standards for workmanship type defects in chromium plated 5.56MM, 7.62MM, AND CALIBER .30 SMALL ARMS BARREL BORES