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marine6680 · June 13, 2014, 10:53 PM

One could assume it is the same as a 5.56 barrel... As they are installed on the same receiver.

The spec it to ensure good snug fit but without damaging the threads on the aluminum receiver.

June 13, 2014, 10:53 PM	#2
marine6680 Senior Member Join Date: July 24, 2012 Location: Parker, CO Posts: 4,594	One could assume it is the same as a 5.56 barrel... As they are installed on the same receiver. The spec it to ensure good snug fit but without damaging the threads on the aluminum receiver.