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flanntastic
08-08-10, 19:51
where are you guys getting these mag extensions for the M&P?
jaxman7
08-08-10, 21:40
http://speedshooter.com/product_detail.cfm?ID=AA2MPS

This is the kit that includes the extended mag spring.
Ed L.
08-08-10, 21:58
Personally, I would be a bit wary about mag extensions with the M&P.
I am not meaning to pee on the thread, just share some of my experience and misgivings.

I have had some situations where the rounds in the mags lodged together and locked up the magazine:
https://www.m4carbine.net/showthread.php?t=51142

As a result, I now run extra strong springs in my M&P mags. I bought some ISMI extra power springs from speed shooters specialties and have since had no issues.

But getting back to the topic of the thread, since I know that M&P 9mm mags have a tendency to do this, I would be cautious about using the extension kit since the new spring might not exert the same pressure as the extra power ones that I use.
willowofwisp
08-08-10, 22:08
I am just trying the Arrendo mag extensions in my 9L and 9c..so far after about 200 rounds they work well...but i am gonna wait till a long class or training day till I decide how reliable they are
jaxman7
08-08-10, 22:46
Ed L I have had the same problems as well as other issues. OP try some out over a few high round count classes and decide for yourself. I have my reservations based on my experience but many on here love them. Before you trust your life with them run them through the ringer.
flanntastic
08-09-10, 08:18
maybe i will wait till some additional companies perfect it
B.K.
08-09-10, 08:40
Why not just buy Hi-Cap magazines?
flanntastic
08-09-10, 08:49
mine are factory hicaps, but i thought 23 rds is better than 17rds
Magsz
08-09-10, 11:12
Between myself and my two buds that i train with regularly we have something like 15 of these units.

To date, i have been the only person that has ran into an issue and i believe it was 90% operator error, 10% design.

I was running the stock mag spring and upon reloading i managed to shift the baseplate off of the magazine. It was a fumbled reload and i had applied way too much lateral pressure on my reload resulting in the baseplate being stripped off.

Since then i have gone to the ISMI extra power springs and i havent had a single problem. Over 1200 rounds through these mags now and not a single issue.

I dont think any product is going to be perfect but these are serviceable IF you set them up right.
flanntastic
08-09-10, 11:32
$50 for two isn't cheap, i guess i got spoiled with my pierce glock ext @ 2 for $9
willowofwisp
08-09-10, 12:43
You cna get them through midway for like 18$ i think? with the spring and plate.

If you wait for a spend 50$ get 10$ off coupon you could grab3-4 and save some bucks too
flanntastic
08-09-10, 13:05
midway is @$14.95 but no spring for it
Magsz
08-09-10, 15:08
That is indeed the one really huge negative to these things.

They're downright expensive once you include the springs.
macnamara
08-09-10, 15:17
midway is @$14.95 but no spring for it

They have them with the spring for a couple of bucks more:

http://www.midwayusa.com/viewproduct/?productnumber=778679&utm_source=froogle&utm_medium=free&utm_campaign=649
willowofwisp
08-09-10, 15:20
midway is @$14.95 but no spring for it

i just purchased mine from midway with extension, spring and basepatle for 18$..
flanntastic
08-10-10, 08:05
ordered three from midway yesterday, now if S&W would just ship my threaded barrel i would be set
willowofwisp
08-10-10, 09:15
ordered three from midway yesterday, now if S&W would just ship my threaded barrel i would be set

I am not sure what's going on with those spec ops barrels....my buddy ordered one and had it in a week yet they were backordered and his brother ordered one the same week and waited like a month for his