Sig Arms Mosquito 22LR reviews

Global Rating: 4.26 from 23 reviews.

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rating title date name city state/province country
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.
SIG MOSQUITO (3/5) Aug 5, 2009 scott stickel waukegan ill 60085 il US
  the mosquito is a great little gun.fairly well made,though a little touchy about the ammo you run through it. i have had problems with the trigger and had to have it replaced under warranty. just reacently i had to send it back again for a cracked slide.in all fairness to the little gun,i put about 10,000 rounds through it.i shoot federal auto match and have no issues at all
question (3/5) Aug 30, 2011 josh wennebrg Clovis Ne US
  I have read most of the reviews and i havent found one that has said anything about the supressor that comes with it for this special can anyone shed some light on that...

i.e. tactical innovations TAC-65 silencer
MOS-22-B-TB-TAC65
After 1st outing w Mosquito (3/5) Mar 15, 2012 Theresa Lamb OLIVE BRANCH MS US
  Love the feel, style etc of this weapon; wanted something for cheaper practice as my weapon of choice is my Glock 19. I did have some isuses with FTF, FTE using bulk .22LR Winchester. Will relubricate and I am going to get the CCI Mini Mags recommended & hope that clears up those issues. I called Wal-Mart sporting goods dept and they do carry the CCI brand and it's just a little more expensive than the Federal and Winchester 550 and 555 boxes.
Puzzling (3/5) Mar 11, 2013 John Cassidy Novi MI US
  Have two Mosquitos, one for me and one for my daughter. Still in break-in period for both, trying all sorts of ammo. All high velocity or hyperV. So far, the Remington golden 40gr are the winners. Almost zero issues. For the heck of it, tried 2 clips of 40gr Thunderbolts yesterday. Expected problems, and not one misfire or ejection issue. CCI 36gr HP not perfect by any means. About one in ten don't eject or reload to the chamber properly. Got some CCI Velocitors coming next week. Maybe the 40gr bullet is key. Biggest problems? Surprising, but Winchester SuperX HyperV 40gr HP. Can't get three in a row to fire. Switching clips, alternating bullets, etc. in both guns to see what works best. These things are really a puzzle, but when they work they are really fun to shoot.
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
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.
Sig Sauer Mosquito (4/5) May 17, 2009 Richard Cole Chesapeake Vi US
  After my USMC son bougt his Mosquito at a big retailer, choosing it after first holding the S&W P22, I loved it. Love the gun. Shoots CCI minimags well, no misfeeds, didn't like the CCI Stingers, or just about anything else I had on hand, including Rem Thunderbolt and some cheap Federals. Won't outshoot the Ruger 22/45 or the Super Single Six my brother owns as far as accuracy, but even he loves the feel and the ease of cleaning. His Thai wife likes the grip of the Mosquito better than the 22/45 since her hands are small.

My police officer son also loves the Mosquito is is considering buying one as well.
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

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