Understanding Go and No Go Gauges for 5.56 NATO Chamber and Headspace

The Significance of Protected Headspace Headspace, in its easiest definition, refers back to the distance between the bolt face (the floor that contacts the rear of the cartridge case) and a particular datum level within the chamber (normally the shoulder or the rim of the cartridge). Exact headspace is important for a number of essential … Read more

close
close