Sig Sauer® Mosquito Pistol

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Cartridge or Gauge
Finish
Stock Color
Other specs Quantity Price & availability

.22 Long Rifle

Black

Black

Barrel Length:
3.9"

Round Capacity:
10 + 1

Hand:
Ambidextrous

Gun Weight:
24.69 oz.
A great gun to shoot for hours, the Sig Sauer Mosquito Pistol delivers traditional Sig Sauer accuracy in a gun 90% the size of a full size P226. The Mosquito's lightweight wear-resistant polymer frame provides a solid base with an integrated accessory rail for lights or laser sights. Rugged blowback system. Fixed 3.9'' barrel. Superior ergonomic grip provides comfortable handling. Gun features an ambidextrous, slide-mounted safety and internal locking device. Adjustable sights.
Rated 4.2 out of 5 by 28 reviewers.
Rated 5 out of 5 by Give it Some Time First 300 rounds of HV ammo had 40% FTE and FTL even after reading the instructions and on-line post suggestions. The gun was very carefully cleaned before use. Can't find any CCI Mini-mag but used other CCI and Winchester M22 ammo. Real disappointing at first. Third time out after cleaning real well and switching to the long spring included in the box, shot 250 rounds of Remington Golden (bucket of bullets) and had no problems whatsoever. Every round cycled as it is supposed to. I did not want to smooth the loading ramp or chamber as some posts suggest. The gun just needs to be broken in for a few hundred rounds or so. Keep it clean and it will perform as you expect from a Sig. October 13, 2013
Rated 5 out of 5 by Read the Directions I bought a Mosquito several years ago and for the first 500 rounds I thought it would make a better boat anchor than a pistol. Multiple FTE, FTF, FTL in every magazine full. Bulk ammo, forget it unless you like headaches. Factory help, useless. Then I found a web page regarding different guns and reviews. There must have been over 1,000 reviews on the Mosquito and some mirrored my experience. Then I found quite a few that said, "READ THE DIRECTIONS." They added that the gun needs to be cleaned and it likes to be fired wet. They also recommended polishing the chamber with a copper cleaning brush attached to a variable speed drill. Following these directions, my Mosquito now fires any kind of ammo reliably, all the time, every time totally error free. It now has over 5,000 rounds fired through it flawlessly and I wouldn't own any other .22 pistol. The trigger does get a little better with use. My wife now has a pink one too. October 3, 2013
Rated 5 out of 5 by Lil Sig-Amazing so far I received my Mosquito yesterday, with a pink finish. I shot 100 rounds through it at an indoor range this morning and I fell in love with it. Of course, first firing it you'll have one FTF, which is what happened with me, but this is one accurate little beast. It's real trigger heavy, but it doesn't take long to get used to. If .22 ammunition was easier to find I would be all over going to the range every single day. A good buy for a first time shooter like me. May 8, 2013
Rated 4 out of 5 by Very Nice I bought this pistol a couple of weeks ago, took it home cleaned and oiled the gun. I started by firing a hundred rounds of CCI through the gun with no problems at all. I changed over to Blazer, and fired another hundred rounds. Moved on to some Golden Bullet Remington, and fired another two hundred rounds of the bulk ammo through this pistol without any problems. The only real problem I have with the pistol is the trigger... it is pretty bad. Single action is poor, but double is gosh awful. The pistol shot nice groups from the bench, and sights were pretty easy to pick-up. All in all I was very impressed with this pistol, especially after many of the bad reviews I've read on feed, failure to feed, and other problems I've been hearing... Guess I may be lucky... IDK February 12, 2013
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2 Questions | 12 Answers

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1 year, 7 months ago
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Anonymous
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A: 
DA first unless you choose to cock it and go SA after that.
6 months ago
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 - Warren, Michigan
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A: 
I don't know as I was so busy dealing with jams I couldn't tell if it was single action or double action. Truth be told, this piece of junk probably qualifies as a no action because it jams up so often.
6 months ago
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A: 
First shot is double, the rest of the shots are single...unless you rack the slide or pull the hammer down
11 months ago
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A: 
Single action, means it can be cocked and fired. Double action means it can be cocked or just squeeze the trigger with the hammer de-cocked. If you load the magazine, action the slide, a bullet will be loaded into the chamber, at which time the gun is loaded and ready to fire, with the hammer cocked (Single Action). You can de-cock the weapon at this time, and fire your first shot by squeezing the trigger (Double Action), or you can re-cock the hammer and shoot the pistol Single action... Either way each consecutive shot will automatically cycle the action and the pistol will be ready to fire again in single action, hammer cocked.
1 year, 2 months ago
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A: 
It means the first shot is a long double action pull. Each shot following is a single shot.

It cannot be changed over or selected. Sorry.
1 year, 7 months ago
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A: 
No it is not selecatble, it is double action first shot single action after the first shot.
1 year, 7 months ago
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 - SWVA Southern America
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1 year, 8 months ago
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A: 
Clean it first, polish the chamber with a copper cleaning brush attached to a variable speed drill, lightly oil and "shoot it wet." Both of mine will now reliably shoot anything I care to use.
6 months ago
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 - Warren, Michigan
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A: 
I've tried 100 rounds of CCI hollow points. 99 times out of 100 fired perfectly, only one FTF. .22 ammunition is difficult to find as of right now, but this gun is picky with ammunition.
11 months ago
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A: 
CCI Mini Mag, but I have shot Blazer, Federal, and Remington Golden Bullet through mine without problems. CCI is the cleanest shooting of all of them.
1 year, 2 months ago
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A: 
everyone says CCI but we just made sure the gun was cleaned very well and have used everything under the sun without issue. It seems to be shipped with white grease on the internals and you want to get that out before it gets hot and covers everything. My thought is that's the issue with picky ammo on this guy. We cleaned it all out before shooting and haven't had one issue yet.
1 year, 3 months ago
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A: 
This is a .22 LR it will not use Win Mag ammo. Most .22 caliber semi autos are ammo sensitive. While they may function perfectly well with most types of ammo there will generally be one brand that is superior to others, It is up to the owner to experiment until that round is determined, again this isn't a neccessity but it will increase accuracy and functioning.
1 year, 7 months ago
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 - SWVA Southern America
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A: 
I prefer mag winchester but there are other brands that are just as good you just nead to try.
1 year, 7 months ago
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