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ir3e971 · March 17, 2009, 09:21 PM

They are harder than normal SR primers.

They are for use in military style semi autos that have a free floating firing pin. This helps guard against the possibility of a slam fire.

March 17, 2009, 09:21 PM	#2
ir3e971 Senior Member Join Date: August 3, 2006 Posts: 145	They are harder than normal SR primers. They are for use in military style semi autos that have a free floating firing pin. This helps guard against the possibility of a slam fire.