dropping the Mag. S&W M&P 40


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nology145
March 21, 2013, 02:18 PM
I have an issue I purchased a stormlake barrel .40 cal with 2 ports at the end of the barrel everytime i shoot it the mag drops out with that barrel now when i try my factory barrel it works fine no problems of any kind what would cause that i have several stormlake barrels for my glock's and they work fine i purchased the S&W M&P 40 in 2006 my mind is boggled.

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tarosean
March 21, 2013, 02:28 PM
Is the feed ramp touching the mag?

nology145
March 21, 2013, 02:56 PM
only if the slide is back and the barrel moves back and forth when i cock the gun back when i move it foward the barrel moves foward just a hair the factory barrel does the same thing

Bovice
March 21, 2013, 03:14 PM
Is the mag able to fully seat with that barrel in?

Put the mag all the way in, and tug a little at the baseplate to see if it moves back out. If it isn't fully seated, you'll be able to pull the magazine back out.

nology145
March 21, 2013, 03:36 PM
tried several times mag does not pull out at all

hammerklavier
March 21, 2013, 03:47 PM
A ported barrel, shouldn't the slide have cutouts for the ported area? If not, maybe blowback of gasses knocks out mag.

nology145
March 21, 2013, 03:48 PM
just had my father shoot it it did the same for him i really think it is the barrel

nology145
March 21, 2013, 03:49 PM
no the barrel is extended instead of 4 1/4 it is 4.9 with the 2 ports at the end

Bovice
March 21, 2013, 03:55 PM
My guess is that the feed ramp is is slamming back into your magazine. Do the mags have any unusual marks near the top-front?

nology145
March 21, 2013, 03:57 PM
here is two pics.

wally
March 22, 2013, 10:25 PM
Photos are too small to see anything that might be wrong.

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