Looking to add a rail to the rear of my AK for a RDS. I need something like a beryl style rail mount except i cannot use one like that because of the folding stock. I also dont think i can use a side mounted one because my stock wont lock in the folded position then. What i need is some kind of rail that mounts to the rear sight post for stability and goes along the dust cover and somehow attaches securely to the rear of the ak....I know i'm asking for a lot but help me out guys....