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globemaster3 · April 19, 2013, 07:55 AM

Barry's on it. Case in point, on my M-4 that I took to Afghanistan last year, if I raised by rear BUIS, the red dot of my M-68 (Aimpoint M4S) rested on top of my front sight.

On a non-magnified optic, it provides a quick recovery capability if your batteries run out or your optic takes a whack that breaks something electronically.

The USAF has us sight each independently... M-68 with the rear BUIS folded down; then the BUIS by turning off the M-68, raise the rear BUIS, and sight in.

April 19, 2013, 07:55 AM	#3
globemaster3 Senior Member Join Date: January 28, 2006 Posts: 1,482	Barry's on it. Case in point, on my M-4 that I took to Afghanistan last year, if I raised by rear BUIS, the red dot of my M-68 (Aimpoint M4S) rested on top of my front sight. On a non-magnified optic, it provides a quick recovery capability if your batteries run out or your optic takes a whack that breaks something electronically. The USAF has us sight each independently... M-68 with the rear BUIS folded down; then the BUIS by turning off the M-68, raise the rear BUIS, and sight in. __________________ NRA Life Member "We have enough gun control. What we need is idiot control."