CNC machined mount similar to the pistol grip mount on milled and some stamped AK47 receivers. The rear hole is threaded 10-24 and can be screwed in place. Do not use the pistol grip reinforcement plates with these mounts.
This can also be used on a Yugo M70 style receiver by modifying the rear hole to use a rivet instead. The original Yugo mount has two rear rivet holes and these were made for the Saiga more than for the Yugo's but it should work.