Sig Arms Mosquito 22LR reviews

Global Rating: 4.26 from 23 reviews.

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rating title date name city state/province country
New Owner (5/5) Oct 20, 2006 Jim Pletcher
  Handles like a Glock, grouping at 50 ft is in a 2" circle. Very well ballanced, comfortable grip.
Site very accurate, easy to adjust.
My Sig Mosquito (5/5) Feb 15, 2011 KetchupHammer CA
  My first gun, and so far I have put about 1700 rounds through it. CCI mini mags are the way to go for this gun. Tried a box of remingtom 333 and still have about 250 left as this gun doesn't like them at all.FTF, FTE etc. Did find a decent, cheaper alternative in Federal Champions(blue/black box). The bullet weight and muzz velocity (36gr/1260fps) are the same and I have had hardly any problems with them. Also came with one metal mag and one plastic(?). My model is a sport version and as such has the extension set screwed on the barrel. This seems like not such a good idea and does actually loosen up when firing but it does not seem to affect the accuracy or function of the gun at all. All in all a fun gun to shoot and I have brought my wife and 12 yr old daughter to shoot with me and it fits their hands very well. Lotsa fun or great for practice. sooner or later I will upgrade to something with a larger caliber and I'm thinking it will be a Sig.
Mosquito sport model (3/5) Nov 25, 2008 don felts Orange Te US
  The first 100 rounds included several that did not fire on the first try, one unfired round that would not eject, and several occasions of the action not fully closiing. Accuracy was good. The manual is contradicted by a separate sheet regarding which recoil spring should be used. There are several errors in the manual. I have not tried the cci cartridges yet, nor the heavier spring that came with the gun but not in it.

The weight on the end of the sport model barrel loosens during firing. Since the front sight is relocated to this weight on the sport model, I am amazed that the accuracy was good. I have moved the sight back to the position on the non-sport model. I am no gun expert, but I am amazed that Sig secured the weight on the reduced diameter of the barrel with a setscrew. I believe a little lump travels down the barrel every time a bullet is fired on any gun. Not smart to setscrew or clamp the barrel of any gun.
Mosquito Sport (5/5) Mar 18, 2009 Eddie Daniel tallassee al US
  This .22 handles great and shoots even better, I have seen bad reviews of the Mosquito but I have feed it all types of ammo and with the light recoil spring it has not failed yet. Much better built than the P-22 walther, and yes I have an informed opinion, I have owned 4 P-22's and I wished I would have started with the Mosquito, decent ammo and a little cleaning and it wont fail you.
Mosquito a Great Shoot (4/5) Nov 24, 2008 Dale T. Pierce Niceville Fl US
  Since my P226 was too large for her hands, I bought the Mosquito for my wife to use at the range. After I received it I took it to the range for break in because I didn't want her to have any trouble with it. Before taking it to the range, I disassembled, cleaned, coated with CLP, and reassembled it. At the range, I put 100 rounds of CCI Stinger through it. Then switched to Federal Copper Coat (Wal-Mart). No feeding problems noted except with Remington (tried several types).
Mag loading is important. After putting 10 rounds into a mag, turn the mag so the rounds are nose-up, compress the spring about 1/8 of an inch and gently shake from top to bottom (a couple of times) and back to top (stop shaking with the rounds leaning toward the feed end). For some reason, the rounds will fall into place for optimum feeding. You can recognize whether you did it right because the nose of the first round is clearly above the magazine.
Perhaps it seems a bit finnicky, but not for a 22LR. Certainly no more so than my Browning Buckmark which needs the same magazine shake maneuver, and on which I had to dremmel the lower side fo the breech to get it to stop the feeder jams. Note: My Buckmark doesn't like Remington 22s either.
Mosquito (4/5) Oct 27, 2009 Brad Natchez MS US
  Finicky with most "underpowered bulk (rather not high velocity)" ammo, even with spring changes. seems to like HP ammo very well. with the three, included front sight pins and the take down ability, it's easy to choose which sight fits you the best. i can definitely shoot my 226 better b/c of this little bugger. BTW, it eats Remington Golden Bullets and CCI Mini Mags like candy. the only real Stinger problem, is the failure to extract "live" ammo, some of the time; it's only b/c they are longer than regular .22's and b/c of the heavy wax that is applied around the bullet
Kirk (5/5) Jul 17, 2009 Kirk Ramsing Albuquerque Ne US
  Great little handgun. I also have a Walther P-22, but so far the Sig Sauer shoots tighter groups and is is not as loud as the Walther. The takedown of the Mosquito is easier than the Walther counterpart. In my opinion, the Mosquito is better built than the P-22, but don't get me wrong, the P-22 is a fine handgun also. I carry a Glock 21 for defense purposes, and also carry the p-22 as a backup because of it's ultra compact size. I train with the Mosquito because of ammo affordability and availability issues.
Great little gun (5/5) Nov 9, 2009 Carlos Tellechea miami fl US
  Just purchased a Sig Mosquito over the weekend and took it to the range after a good cleaning. Misfired several cartridges, I took it apart and put in the optional spring it came with, shot three hundred rounds without another problem. Changed the front sight and I was shooting a nice group @ 10 yards. Sure would have liked it to come with another clip!
Great 'Little' Pistol (4/5) Dec 4, 2009 Nikolaus M. Albuquerque Ne US
 
Finicky but dead-on (4/5) May 28, 2008 Adam Tirrell Hampton VA US
  Still in the break in period for mine, only 300 rounds through it so far; doesn't like CCI Stingers (actually fires less than 1/2 the time; the rest of the time, it's either the second fire after a misfire or it stovepipes) or Legionnare (lot of misfeeds), but with CCI Velocitors or Blazers, the accuracy is incredible, the handling a breeze, the recoil negligible. Handles just like my SigSauer P220 .45, and I find myself shooting better with the .45 after training with the Mosquito. Great pistol

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