I recently built an 11.5 AR pistol and tried mounting the light at the 3 o'clock position. I felt like it was in the way when trying to grip the rifle. This mount rocks and allowed me to mount the light at the 1 o'clock position so it is no longer in the way. It also allows for various positions to mount the light which makes it very customizable. I loved it so much that I bought another for my other AR! I highly reccommend this light mount! Big props to MILSPEC as well for they were extremely prompt in getting this order out to me.