SB 5.56x45


#1

Today I acquired a fired 5.56x45 NATO case headstamped “5.56x45 SB 85”. It is a brass case, with Berdan primer held in place with 3 stab crimps (slightly off centre). It has clear green primer annulus. Which “SB” out of the four listed on the IAA headstamp guide is this? Any info would be helpful.


#2

Spanish, Santa Barbara.


#3

Cheers Jon!