Delete the M-lok hand guard, case and about 150 bucks or add a few mags and I would be happy with a cardboard box..
If you want to add a rail on an MP5, welded is the way to go. I bought a used DJ Getz mp5,
I wish I still had it, the guy that had it before me put a clamp on rail on it, I had to leave it on because the chips in the paint drove me nuts...
The finish and welds on that gun were amazing other then the eyesore left by the rail.
I'm happy with my PTR but I'm patiently waiting for a PSA MP5K unless PTR makes one first.