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Sig P290 mag "problems"

This is a discussion on Sig P290 mag "problems" within the SIG Sauer Pistols forums, part of the SIG Sauer Forum category; I ran two 6-rounds mags of SD ammo through the gun after I bought it. Reloaded the mag "by hand". Then I bought a Maglula ...


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Old 06-27-2011, 05:50 PM   #1
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I ran two 6-rounds mags of SD ammo through the gun after I bought it. Reloaded the mag "by hand". Then I bought a Maglula UpLULA MAG loader.

I was waiting for the 8-round mags to wring it out more. I went out to the Nat'l Forest to shoot today. First I ran out the SD ammo that was already in

the gun. The 8-rd mag. And changed to the 6-rd mag. No problems. And switched to practice ammo.



Two things developed relative to the magazines (the gun was fine).



First, I used the loader on an 8-rd mag. The metal baseplate has a "pin" holding it in place. The plastic "finger" extension extends below the metal baseplate

and all around the metal magazine. And, it is free to slide up on the mag. All the way to the top and off the mag if you want.



In order to seat the mag in the gun requires a REALLY HARD SLAP to the mag with the heel of your hand, at the back of the mag where the metal base is

closest to the bottom of the plastic "finger surround". If you don't DO THIS the mag WON'T seat. It WON'T SEAT. It is easy to "miss" this.



You can seat the 8-rd mag with "normal" pressure by placing your thumb inside the plastic and pushing directly on the metal baseplate. Not a "reload" method.

And, I guess I'm supposed to "glue" the plastic finger extension to the metal mag ?



Second, I started to load the 6-rd mag. After two rounds, the baseplate flew off, and part of the spring came out. It turns out the baseplate is plastic and has

internal slots that slide over metal "rails" formed at the bottom of the mag. There is NOTHING to retain the baseplate, and it is easy to slide it forward

(and off), even when the mag is fully loaded. It has a hole in the center of the plate in the same place as the metal 8-rd baseplate, but no retaining "pin".



When reloading the 6-rd mag I had to place a finger under the loader to keep the baseplate in place for EACH round. Failure to remember that caused

the baseplate to fly off because of the "loader angle". I'm ashamed to admit how many times that happened.



Questions:

Other P290 owners: Do your 6-rd mags have this system of a plastic baseplate "just sliding on" with no retention method ?

Other Siggies: Do any other Sig mags "operate" like this ?



I'm wondering if my 6-rounder "missed" an assembly operation ?
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Old 12-21-2011, 08:44 PM   #2
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It definitely does sound like your mags are missing a piece. The little retainer plate with a notch that fits into the holes on the bottom of the plastic base plate, every mag for every gun, including my P290, has this. Make sure also that the retainer plate's little notch goes into the base plate's hole.

As a side note, when I first cleaned my P290's mag before I first shot it I almost lost the little retainer plate! It flew into a range bag and I couldn't find it for about an hour and a half of searching--tiny guns have tiny parts.

Last edited by LeRI; 12-21-2011 at 09:36 PM.
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