The 5.56x45mm SS109 Cartridge

This post contains a September 1984 magazine article from SWAT magazine that discusses the SS109 cartridge that was in the process of being adopted at the time and contains seven tables of test data.

Selector Block

The following discussion involves a part that isn’t Colt. However, it is a unique and not commonly known piece of M16/M4 history. When I began my Army career in 1988, I was a traditional weekend soldier in the National Guard. The hot topic at the time was DSCA…Defense Support to Civilian Authorities. DSCA was aContinue reading “Selector Block”