As a Seabee in Chu Lai 1968-69 base assigned not a battalion. I carried an M-14 on the dozer and grader while working. I talked the base armorer out of a shotgun for patrols outside the base. I was issued a Stevens pump 20" cyl. barrel. It's been 50 yrs now but I think it held 5 in the mag and one in the chamber, 2 3/4" olive green rounds with 9 pellets, it was just the ticket for what we were doing, just wish we had a couple more and I wouldn't have been stuck with point all the time. Luckily we only had to run patrols rarely.

After the first shot the rest are just noise.