- Feb 12, 2015
- SE MA
Pretty sure you can’t put a .45 barrel in a .40. You can put a 9mm & .357Sig in a .40 tho. M&P and Glocks. I imagine other makes too bit the ones I have done it w are those.I looked into that a while ago for my Shield.
Someone mentioned that it was cheaper to trade it in for a Shield 9. However, I can also get a .45 barrel and have 3 guns in one. I'll have to get the appropriate mags as well
The other thought is do you really want to have a drop in barrel in an EDC? I have drop in 9mm barrels for a M&P40 full size & Glock 22 but I don’t carry those. Both fire great w 9mm but then again I rarely shoot either of them much. Not sure I’d trust carrying a subcompact gun w a drop in barrell although I have a friend that out one in his .40 and it works fine (he eventually bought a Shield 9 and used the .40 w the 9mm barrel for practice).