Converting a 40 cal to 9mm

[aherring1983]

I have four guns that I'm looking at converting over to 9mm so I can have extra calipers,
1. Glock 27 " gen 3 "
2. Glock 22 " gen 3 & 4 "
3. S&W M&P 40 " full size "

Ok, so from what I heard and understand about the is it's simple as swapping out barrels and mags,,, is the M&P 40 the same way,, thanks for any help anyone can give me, also goes the feed/fire reliability on the conversions, none of these are carried as a CCW, thanks again.

 

[JBP55]

Some have changed to the 9mm conversion barrel and 9mm magazines in Glocks and had no issues. Occasionally you may need to change the extractor and or ejector to 9mm in order for the gun to run properly. I prefer the KKM barrels but the Lone Wolf is the least expensive. The conversion barrel and 9mm magazines should work in the M&P also.

 

[kpm]

I did this with my m&p 40. I purchased a lone wolf conversion bbl ( thanks geaux shootin). This allows me to only bring only 9mm ammo to the range and it is cheaper. I simply swap the bbl and change to 9mm mags. Very simple. I highly recommend it.