My Mosquito
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Old 09-29-2010, 06:53 PM   #1
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Default My Mosquito

It was with great joy that my wife presented me with a brand new Sig Arms Mosquito a few years ago. She bought it for me as a birthday gift, based solely on the reputation of Sig Arms, and on a well placed "hint" that I was looking for a .22 auto loading pistol. At the time (2005ish) the Mosquito was brand new on the market and to my dismay, I learned that there were several "bugs" yet to be worked out of them. (Beware of low serial numbers.) It failed to do just about everything, and some new stuff I'd never seen a pistol do before. (It would strip a round from the magazine, eject it from the pistol and close on an empty chamber. )

I phoned Sig Arms customer service and sent the pistol back to them, and they replaced it with a brand new one. The newer one was better, but still had issues, mostly fail to feed, fail to extract / eject, regardless of the ammo used. I pretty much designated the pistol a "safe queen" and forgot about it.

Fast forward to a couple of months ago when I read something about the Mosquito on a gun forum, but other owners said theirs functioned flawlessly. I decided to give the little pistol another chance, but before taking it to the range, I emailed Sig Arms CS again. Their recommendation was to oil the heck out of it, especially the extractor, for which a hole is drilled in the slide. Being old school, I'd always been taught to use only light oil on semi-autos to prevent lint clogging. Sig also suggested that I clean it after about 200 rds, and that Mosquitos really, really like CCI Mini-Mags.

Last week I took it to the range and after slathering the action and extractor with oil, my little Mosquito ran flawlessly. As a test, I ran a mag of Brand-X ammo through it, causing it to hiccup and fail. The next mag was filled with Mini-Mags, and it ran perfectly.

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Old 09-29-2010, 07:01 PM   #2
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Good to hear you figured it out. Bummer though that it is so twitchy.

I'm not a Sig fan, but reliability has always been their greatest strength.

How does yours shoot?

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Old 09-29-2010, 07:30 PM   #3
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I had the same problem with my mosquito,sold it after one month,the CZ kadet in 22 is way better than the mosquito

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Old 09-29-2010, 07:47 PM   #4
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Early Mosquitos were very flaky and many had mags with weak springs. A lot of the "problems" also came from folks not matching the recoil spring to the ammo they're shooting (new, they come with 2 - 1 for normal ammo and 1 for high-velocity ammo). I gave my son one and it's rock solid and reliable. They ain't target guns by any means - but they are fun plinkers...

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Old 09-29-2010, 08:19 PM   #5
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Quote:
Originally Posted by M14sRock View Post
How does yours shoot?
Impressive! Once I figured out which front sights to put on it, I am able to keep a very tight group.

Not only do they come with two recoil springs, they also come with 3 front sights. A year or so ago, they were running a special and I was able to get a free Fobus holster for it.
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Old 09-29-2010, 09:18 PM   #6
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Mine runs pretty reliably with CCI Standard velocity ammo & the white painted spring (for subsonic & standard velocity ammo). Make sure the spring is installed correctly, since one end is larger diameter than the other. I usually run mine suppressed, so that may help functioning in my case. It does need to be kept cleaner than my other .22 pistols to function properly. The trigger is one of the worst I've ever used, rimfire or center fire.

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Old 09-29-2010, 09:28 PM   #7
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Quote:
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Mine runs pretty reliably with CCI Standard velocity ammo & the white painted spring (for subsonic & standard velocity ammo). Make sure the spring is installed correctly, since one end is larger diameter than the other. I usually run mine suppressed, so that may help functioning in my case. It does need to be kept cleaner than my other .22 pistols to function properly. The trigger is one of the worst I've ever used, rimfire or center fire.
absolute right on the trigger ,another reason why I sold the gun
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Old 10-10-2010, 02:37 PM   #8
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A major benefit in my mind is the takedown procedure. It makes my Ruger mk2 takedown feel like building an engine. I am sorry but I don't think that a fun gun should be harder to take apart than my carry gun. I stopped shooting my ruger because I can't stand cleaning it, but my mosquito goes with me to the range everytime.

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Old 10-10-2010, 02:42 PM   #9
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Just get an S&W Model 17, and you'll never have any of those problems ever again.

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Old 10-15-2010, 07:23 PM   #10
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A good friend of mine just bought one. I had a chance to shoot it last weekend and I was impressed with that little autos accuracey. Good choice.

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