Yeah that would be great to be able to get a 357 Sig barrel for the P-06. All my Glocks have both .40 and 357 Sig barrels. I believe the breach face is too small on the 9mm P-01. The P-06 slide would be needed.
Right, which is why we need to figure out why your P-06 slide is not fitting the P-01 frame.
Do you have a link to Gunbusters’ parts kit sales? I found a link to their firearm frame & receiver destruction service, but nothing on the parts sales. I know there was a controversy when libtard anti-gun groups all got their panties in a wad when they found out confiscated guns were being sold for parts. Of course, selling the parts is how Gunbusters funds their “free” gun destruction for the gub’ment.