Widen Receiver forks?

[Lugerdoc]

Q, You would have to open up the rear of your receiver to over an inch gap before you would have any lasting widening when relaxed, so I don't advise it. If your luger is a mismatched shooter, I would advise trying a narrower breech block, as these will vary somewhat in dimentions. Like GT and an old German boss of mine told me as a junior IE at Anheuser-Busch "What you can't measure, you can't control". TH