I got a CMP 37 mm Launcher that Im tring to mount to a Bushmaster 16" flat top upper that has a A2 carry handle.Ok the only way that I can see to mount the quadrent sight that came with launcher is to mount it on the side of the detachable carry handle that has the thumb knob to tighten the carry handle down,the problem with that is that when you go to adjust the sight for distance it runs into the carry handle thumb knob at about 100 yards.I can send pictures though email...Email me for pictures at [email protected] Please help and maybe one day I can help you!

IF that's a military quadrent sight, you're mounting it on the wrong side of the handle I believe.

The quadrant will not fit on the Det CH - at leats mine won't...

The Quadrant part should be on the left of the rifle.

It seems to fit on it,But I guess you cant use a quadrent sight on a detactable carry handle because it runs into the thumb screws on it.This sucks.......