Non-railed and thus the sight is already screwed unto the mount and shoud remain there as it has now use for other airsoft guns. RedWolf Airsoft is offering this for US$99... "Designed specifically for Hi Capa type pistols, RD Dynamics brings you an extremely robust reflex sight. Made to reduce and eliminate variances in targeting by the blowback action of your pistol, the RD Dynamics Reflex Sight ensures your shots hit your target each and every time.

Ideal for competition shooting.

Requires modifications to be made to the frame of your pistol, and thus Redwolf recommends that your first installation be done by a professional smithy. "