Quake 2 md2 edits, iron sights etc. Thread

Hey. I need to edit further some original quake2 models. Edits would include(based on importance):

-legs from running animation with upper body from first frame of attack, for male and female models, preferably also with second frame of attack's upper body

-add back gutted/cutted v_models, as I added iron sight/aim mode and the cut offs are visible

-add iron sights to v_models

-animate prone position, crawling

-animate smimming

Any simple way to merge frames ? As I would be able to do shoot-run animation by myself.