These measurements are if you want to keep the rear sight if you wanna use the full MOS plate you’ll have to get rid of the rear sight; you can decide where to put the holes but I used the stock left front one and moved the right one to the rear to clear the extractor.
When I sell high cap mags to civilians I find a rod the right length and glue it to the back corner of the magazine so that it hits the follower. You have to find a ride that is big enough to stop the follower but small enough to not touch the magazine spring
I was able to convert my SAR K12 from SA to DA/SA using small frame Tanfoglio trigger, trigger bar, hammer and disconnector; all drop in!
I also machined mine to use modified mos plates.
After some careful measuring I realized it’s pretty easy to mount a red dot on a PT 92 versus a Beretta 92 because the lack of firing pin safety protrusion. The PT 92 slide can be machined to except shortened clock MOS plates. With the light Beretta‘s mainspring and minor machining ,7 1/2 pound double action 3 1/2 single action and shorter reset.
I was able to convert my SAR K12 from SA to DA/SA using small frame Tanfoglio trigger, trigger bar, hammer and disconnector; all drop in! While I was at it I drilled and tapped the trigger for a OT stop.