I'll be waiting four to six weeks for the 'Swedish Luger' to come back and I can start assembling it. Until then, I have a shelf full of projects.
One was a 1911 parts kit with an FN M1911 slide in 38ACP that was so tight it wouldn't slide on the receiver. I've lapped slides in in the far past [80's] and still have the three grades of 'lapping compound' left. So, I made up a handy slide attachment and a magazine well reinforcement and lapped the FN slide in. (In those halcyon years of yore I would use my bare hands. I still have the scars). First valve grinding compound, then polishing compound, then rubbing compound. You 'saw' the tool back & forth like sawing wood. Now the slide glides as slick as grubs through a goose.
(I've had to do this with a parts Luger too. Same principle).
I'll function test this one when I can get some range time again.