Sig Romeo5 1x20mm thoughts

[gshayd]

I wonder how secure that mount is. With it only being dovetailed in will the mass of the red dot eventually cause it to move during recoil? Also, without the removal of slide material to counterbalance the optic will it overpower the recoil spring because it is too heavy? Intriguing idea though.

a reflex sight in it is not going anywhere if the rear is still an oem fit and hasn't been changed. The reflex mounted on the slide is nothing new in the pistol world as some come from the factory ready. recoil springs can be had in various weights. for most pistol calibers I don't think that is going to be a problem.