It has always been a little bit a challenge to mount a white light on AK-47 (and similar) rifles, especially if you don’t want to have a railed hand guard on your rifle. RS Regulate has a simple and attractive solution in their BM-1 light mount.
The BM-1 is designed to mount to the barrel between the gas block and hand guard retaining cap. It places a small 1913 rail section in the perfect position to work in conjunction with an offset light mount. This is a great solution because AK hand guards are cramped enough as it is. Pushing the light forward like this leaves more room for the support hand on the hand guard and allows more intuitive activation.
You can check out the RS Regulate BM-1 at Brownells.com.