I haven't heard of those ever failing so they are fine. I replaced the plastic MSH on my Kimber with a metal one just by principle.
I've never heard of any problems with them either, but I may still pick up a metal one, I had one from Dlask on my GSG that I really like, I may order another one.
I found the same thing with my Colt Delta... 10mm brass scarce & expensive when found. So, I had a .40 S&W barrel fitted to my Colt so now have access to all the free once fired .40 S&W brass the local munie cops leave littering the local ranges to feed it.
Only use full house 10mm for those 'special occasions'...lol...
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NAA.
I just order some Starline brass, price wasn't to bad at $110/500
Congrats! Sweet looking 1911. I can't recall the last time I've seen 10mm ammo.
I picked up 400 rounds at my local shop in Hamilton, I think they still had 10-12 boxes left.