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Skans · November 11, 2012, 12:22 PM

The piece of hardened steel inserted into the rear of the Colt AR's with a blind pin is referred to as a "sear block".

November 11, 2012, 12:22 PM	#6
Skans Senior Member Join Date: November 20, 2008 Posts: 6,256	The piece of hardened steel inserted into the rear of the Colt AR's with a blind pin is referred to as a "sear block".