Something you might want for your airsoft gas blowback pistol, a flip-up reflex sight. NcStar got this video promoting their Vism FlipDot Reflex Sight. No idea when this will become available in the market including pricing... "Vism by NcSTAR FlipDot pistol flip up reflex optic. Will fit Glock MOS and most pistols with RMR cut slides."