I've disassembled and reassembled mine several times, but the last time I had the same problem. The slide locked up during assembly and it wouldn't move either way. Wife called me for dinner so I went and ate and came back in an hour and it went right together. Strange.
Wow, after a great morning at the range with my gen 2 R51, (everything went bang and ejected).I took it apart to clean it. Man, that slide spring is tough for an old man's hands.Guess what, the gun would not go back together. I called Remington, talked to Justin Emersonand he said send photos. I did, got a reply on the phone about an hour later. He is sending mea shipping package with label for UPS. That was quick. Don't know what all the fuss is aboutservice. Anyway, while I was at the range, I shot Remington white box, WInchester USA Forgedwith the iron casings, and Ruger ARX Polycase. All went bang. Will get back with any thingI find out from Remington.
I haven't tried the brand you mention, but do have some Tula steelcase, but I am reluctant to try them through a small handgun like the R51. Maybe through my Beretta 92FS or CZ75BD would be ok.
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