Don’t bother, get a magpul mount instead - Viking Tactics VTAC FlashLight Mount

This mount is not confidence inspiring. It works okay, but feels flimsy. It’s also not very adaptable — you can either fit .8 inch OR 1 inch lights, nothing in between. For the money, Magpul’s rail light mount offers more adjustability, a better feeling polymer, and a more solid lockup, plus has the ability to mount scout lights directly. And all for a similar price point.