Hi Olle, It can be done, but you have to be carful?? Also, you have to get it right pretty quick, as the are probably not dead soft and maybe will crack due to work hardening or temper... But, you'll get a couple of shots at it... you need, a good vice, some brass, steel, and probably some aluminum plates and pieces... First things first, using a digital caliper, measure across the width at the chamber, this is your base measurement... next using a machinists straight edge, or square.. check along the sides using the chamber area as your guide, and see which rail is bent, either in or out, or perhaps even twisted some... Then it's just a matter of, blocking, spacing, clamping, SQUARELY, the receiver in a vice with protective blocks, and springing the rail slightly past the yield point and check for straight... over and over... also, holding or clamping a long vertical straight edge on the receiver sides at the main pin area, will show if you have twist... again, clamp some blocks on it and twist it back, with a little bit allowed for spring back as before... It should display some memory, and you will be surprised how close you can get it...Just make sure of where you want it to yield.. as you don't want wowies...
... When the back is square and straight, it sould measure within .002" or "003". probably +.000" /- .003", You'll know a hell of a lot more when your done! .... best to you, til...lat'r....GT...
