I got one, its not stainless, but its an Operator, pretty sure loaded with a bunch of stuff on it, came that way, bought it used for $600

it was my 1st 45acp(I think) and I really liked it and shot it really well, I was happy, ran 1000+ rds thru it without a hickup.

a month or so latter, I bought a HK Expert 45acp it was a HK test-evaluation gun(press pics as it had no wear) paid the same.

Took the HK to the range......it was like it was part of me, I could close my eyes and each rd went thru the same hole(and I can also bend bullets around corners, but I degress)...it just amazed me, so I now have a "few" HK's and the Operator just sits......but i think its kinda rare as it has the full rail