[un45]

Has anyone ever shot/owned an MP5 with a .357 sig conversion and upgraded frame? I've shot .357 magnum revolvers, and always thought that the round was better suited for a carbine or SMG.

 

[Las_Vegas_HK]

Gordon Miller sells HK94's that are converted to 357 Sig he does want top dolar though.

From what I heard the 357 Sig cartridge has some feeding problems in the MP5. I have also heard some people who take a MP5 40/10 and replace the barrel with a 9mm barrel and ream out for the 357 Sig chamber.

When I had my last MP5 built I was serious considering going the 357 Sig route but decided against and went 40 S&W.