Sig Arms Mosquito 22LR reviews

Global Rating: 4.26 from 23 reviews.

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rating title date name city state/province country
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
Sig Mosquito (4/5) Oct 16, 2009 Barry Hartman DeLand Fl US
  I use the Mini Mags and Remington golden bullets and it runs great. I love it and also have a Ruger and Browning .22 .
the Mosquito is the size of my 229 Sig and a great warm up gun.
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
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!
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 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.
sig mosquito (5/5) Oct 21, 2011 Gerard F Bilodeau Belfast Ma US
  I went to buy a walter p-22 but then saw the sig and compared them side to side and the sig won out.more substancial,better grip and same price.
New Sig Mosquito (5/5) Mar 17, 2014 James West Monroe GA US
  I have read on the net all of the supposed problems with the mosquito. I noticed the following comments: bought the pistol and went directly to the range without cleaning first ( and you wonder why it is a 'jamomatic'!) and the famous "I have never had one but..." so, why are you even commenting?

I read the owners manual first, then disassembled and cleaned the pistol per the owners manual, use only high-quality, high-velocity ammo ( owners manual does not mention any particular brand ), clean pistol after each use and so far I haven't had a lick of trouble. Is it a match quality firearm? No, but it is fun.
Sig Mosquito (5/5) Sep 5, 2009 Jarred Clearwater Fl US
  No trouble out of it as long as I shoot copper plated rounds. Lead nosed ones don't like to work quite as well. But I've shot Federal and Remington bulk ammo and have had 3 that didn't eject. I've had it for about a week now, and I have put 1450 rounds through it with the three failure to ejects'. Broke it in with 400 rounds of CCI Mini Mag's and then switched to the bulk without a problem.

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