Conversion barrel for M&P 40c question
- Thread starter D-Hop
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scattershot
Member
rgoodwin is correct. That's where I got mine, but it was before the current madness, so I don't know if Midway has them or not. The ful size barrel will not work in the compact, though, so be careful when you order.
Jyezahn
US Veteran
Guess you'd better tell this guy that. He's breaking the rules then.
M&P full size barrel in a compact
scattershot
Member
My full sized 9mm barrel (factory) wouldn't work in my compact, because the barrel has a boss at the muzzle end, and the barrel itself is thinner. Maybe it will fire, but it doesn't fit.
Jyezahn
US Veteran
Apparently, it does fit and fires just fine. As that guy's threading the FS barrel and using it. Yes, it's longer, but that's pretty much it.
scattershot
Member
Just got off of the Midway site, looks like they have the barrels in stock.
Tangsoo
Member
Thanks Rgoodwin, I ordered a 9mm compact barrel from Midway for my .40 and it is supposed to arrive Monday.
The day before I read this thread I had gone into my LGS and asked the guy at the counter if he could order a barrel for me. He said he couldn't do that. Told me that barrels weren't restricted , and I could order it myself. I was admittedly being lazy, and was willing to give them the business and pay the $10 or so I thought they would charge to do the order, but I guess he (and you) did me a favor.
The day before I read this thread I had gone into my LGS and asked the guy at the counter if he could order a barrel for me. He said he couldn't do that. Told me that barrels weren't restricted , and I could order it myself. I was admittedly being lazy, and was willing to give them the business and pay the $10 or so I thought they would charge to do the order, but I guess he (and you) did me a favor.
robkarrob
Member
Before going out and buying 9mm mags, try using your 40 mags to feed the 9mm rounds. It should work fine, especially if you are doing the barrel swap for practice purposes. Many have used their 40 mags to feed 9mm cartridges, and had no problems. A few have said they have had problems feeding the last round in the magazine. If using the conversion for SD, then I would suggest buying the 9mm mags,
Bob
Bob
What about the ejector? Isn't it shaped differently in the 40c compared to the 9c. And what about the extractor?
These two parts are different for the two different calibers.
Are you not asking for problems?
Is it really as simple as getting a barrel and mags and you're good to go shooting 9mm outta your 40c?
These two parts are different for the two different calibers.
Are you not asking for problems?
Is it really as simple as getting a barrel and mags and you're good to go shooting 9mm outta your 40c?
monkey wrench
Member
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Shot my 40c with a 9 barrel yesterday just to see if I would have any problems and worked fine. Now I only shot one mag with about 10 in so that doesn't tell me if I would have problems later but gotta save the 9's for the shield 
)
)Smitty357
Member
Factory barrel and u shouldnt have any problems. I've been shooting my .40 Shield converted to 9mm since last October and I havent had any problems.
Rowlette
Member
I concur you will have zero problems with 9mmC/40C/.357C don't be concerned I've shot each one I have put enough down range can't remember how many and I feel safe enough to recommend the versatility and the fun. My stock MP is the Compact .357 Sig. Rowlette
Do a search on the forum.
Tens of thousands of rounds downrange and not a problem, unless you go for one of those high priced Storm conversion barrels. Stock barrels have been doing better.
.
Jyezahn
US Veteran
The ejectors are the same part number between the 9c and 40c. The extractors are inconsequential even if they are different because as long as the claw wraps around the casing lip, it'll pull it out. (I can't tell if they're different because the parts list does not identify the extractor)
