.40cal and 9mm conversion kits

[chopper duke]

HK's 40 will take a .357 sig barrel and shoot the rounds find out of the same mag. The .357 is essentially a necked down .40. There is a 9mm conversion barrel available, but not form HK. They don't recommend doing this because this because the case size for the 9mm is smaller than the .40 and extraction and ejection becomes an issue.

 

[rugerceltics13]

Sig is the way to go

whole heartedly agree. once i went sig, i never went back

 

[BorisTheSpider]

Tangfoglio witness

 

[boneboy96]

Here's a Sig with .357 Sig and .40 S&W barrels and mags! U can get 9mm also I believe.
http://www.theoutdoorstrader.com/threads/317897-FS-FT-Law-Enforcement-Sig-P239-in-357-Sig

 

[woodstock]

M&P works great, have 40, 357 sig and 9mm barrels and mags(40/357 same, 9 different).