Sig Arms Mosquito 22LR reviews

Global Rating: 4.26 from 23 reviews.

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rating title date name city state/province country
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.
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.
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
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.
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 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.
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.
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!
Feels Right (5/5) Dec 22, 2009 Johnny Munk Woodland Hills CA US
  I just purchased a Sig Mosquito,and I pick it up in a week.CA gun laws you have to wait ten days before pick up.The mosquito fit my hand perfect and I like everything about it so far.When I pick it up and go to the gun range .I will write a new review.I hope its all good and 5 stars!!!!
Sig Mosquito (4/5) Jun 27, 2010 Roy Darrington Sacramento CA US
  I took possession of my Mosquito last week and took it to the range today for the first time. I've read all the reviews and the owners card about using CCI Mini-Mags for at least the first 500, but those rounds are about as easy to find as hens teeth. So, I broke in the action by cycling it at least 1,000 times, manually, then checking it over for any bits of metal that might have broken loose. There were a few really small pieces.
Performance at the range was good. This is the first 22 cal Semi auto I've shot in years. I had a brick of Remington 22 LR Golden Bullets to shoot. I had 2 misfires (reloading the round got it fired the second time), about 12 FE issues, and no FF issues at all. Accuracy was acceptable, hand held, at 10 yds. The stock sight printed all of my shots about 2 inches low at that range but replacing it was fairly simple and solved that problem. Overall, first impression, I'm very happy with my purchase. The DA trigger pull is not acceptable to me (not as smooth as I like it) but SA trigger pull was crisp if a little heavy for my tastes.

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