I made a high reliability AR-15 magazine feed lip go/no-go gauge.
It's "high reliability" because I didn't appreciate the shortcomings of my caliper's "depth" gauge (or perhaps my lack of skill using it that way) and the fat part of the gauge is 0.004" thinner than it should be.
I saved myself $45 by making it instead of buying one from Brownells!
Crappy glamour shot:
How you use it:
It's "high reliability" because I didn't appreciate the shortcomings of my caliper's "depth" gauge (or perhaps my lack of skill using it that way) and the fat part of the gauge is 0.004" thinner than it should be.
I saved myself $45 by making it instead of buying one from Brownells!
Crappy glamour shot:
How you use it: