The OP here, Jenssweden, finally got his "tanker". He put it on another post, hopefully he's going to come back here. I believe he had his done by Herbert Werle.
Call it what you will, there's "bubba" versions, and then there's well done conversions as most informed people know. Herbert Werle is an outstanding German gunsmith, of the old world variety; he once worked as a depot maintenance gunsmith for the US Army, no small qualification. He now does extreme mods for P08 Lugers and M-1 Garands and I'm about to have him do the "tanker" conversion on my M-1, don't care for comments on whether it should be done or not. Herberts work is proven; I would have mine done by Fulton, Dean or Tim Shufflin if I weren't living in Germany, but Herbert is every bit as good as those guys, maybe better, but that's all opinion stuff.
Herbert specializes in creating a Drückjagd carbine version of the M-1. the "Drückjagd" is a type of hunt here in Europe/Germany where short barreled medium caliber/cartridge rifles reign supreme and the M-1 with short barrel is perfect; quick follow up shots are really necassary. However, my standard M-1 is just too heavy and long for this:
But this will be perfect for the traditional Drückjagd (don't get excited, it's a photoshop creation, Herbert hasn't even gotten his hands on it yet):
I don't care about the supposed sacriledge of this and yes it's an orginal 1942 issue Springfield, the year my granddad was captured by the Japanese. It will never be sold, never shoot in IMA matches or anything traditional like that, will never perform reenactment duty; it stays with me 'till the end, and I need it to be a little different than it is for actual use (hunting and recreational shooting). Loss of power is too minimal to even be a consideration.
I have a question for the experts like Tim or whomever. Since the original Garand had issues with slow burning powders, how does this affect the carbine conversion? Must you still use the faster burning powders and M-1 safe ammunition? I use Mcccan's adjustable gas plug and M-1 safe ammo, but am thinking to be safe, I will need to use the adjustable gas plug always afterwards. Just kind of curious, though.
For the record, I'm retired US Army and live in Germany (still work for the Army though).