Back before I was in M60A1 tanks, we had the M2HBTT .50, either in the commander's cupola or on a Chrysler gun mount on top of the turret roof. I was known for wearing a headspace and timing gage on my dogtags, and I got kidded, but I also got to be the *go-to* guy when somebody couldn't find theirs.
Then I was off to the 70th Armor, which had M60 tanks, and in HQ Company, three M60A1s- my babies. And they had the M85 .50 in the commander's cupe, which had a quick-change barrel and didn't need a HS&T gage. Haven't carried one since, 'cept for about ten days in Israel in '73. They had M2s [and .30 Brownings reworked to 7,62!] atop their old ex-German Army M48A2s.
