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Old May 23, 2010, 11:18 AM   #1
Junior Member
Join Date: May 16, 2010
Location: minnesota
Posts: 10
AR firing pin protrusion

Anybody know what the mil-spec and/or optimum firing pin

protrusion is on a AR-15/M-16 in 5.45x45/.223 Rem. My new Stag Arms mod. 6L checks @ .026. It's obviously adequate as the rifle was test fired by mfg. ; but is it @ optimum protrusion ?

Last edited by gunuserfixer; May 23, 2010 at 11:35 AM.
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