Sig Sauer Mosquito Pistol


Style Full Size Pistol
Frame Various
Caliber .22 LR
Capacity 10 rounds
24.6 oz (697 g)
Length 7.2 inches (18.3 cm)
Barrel 3.9 inches (9.9 cm)
Trigger DA/SA
Manufactured Switzerland by Sig Arms
View More Sig Sauer Pistols
User Manual Download PDF

Sig Sauer Mosquito Reviews

179 Reviews


izombiee2u from Fort Wayne, IN on Mon, 12 Jun 2017

I bought this from a gun auction sight for about $200 for my wife, as i bought the pink and black model. The gun is nice, it needed ALOT of cleaning which isn't the guns fault. I find the remington gold nose and CCI ammo are the best ammo for the gun (which the manual states due to tolerances that it was specifically made to shoot CCI ammo.) i like the gun and will even carry it myself on occasion.

Eric D. from Rossville, IN on Mon, 13 Jun 2016

I posted back in early November about polishing up the chamber. Haven't had much range time lately but did go out a bit last Saturday. What I found was that if I loaded up 10 rounds in the magazine, it would fail to feed after the first shot, then fire off the ramining 9. This happened a few times, but when I only loaded 9 rounds, it fired them all with no problems at all. Have not played with the magazine but I think that's where the last of my problems lie.

Eric R. from Willow Springs, IL on Sat, 21 May 2016

With all this re-newed talk about the Skeeter, I took mine out this afternoon and ran about 130 rounds through it. Shot like a champ, only had 1 stove pipe. Now I gotta go clean the little jewel!

Marvin H. from Gainesville, FL on Sat, 14 May 2016

FYI - for those of you that purchased a mosquito without a threaded barrel (Winter camo model), I finally found Gemtach is selling them to drop in. I'm goig to add one and pick another suppressor so I can have an ultra quiet little toy!

Carl C. from Kealia, HI on Sun, 24 Apr 2016

I got the gun this Friday. After reading the reviews, i was nervous about the purchase. Fortunately, i was able to talk the price to $225, which was a \n amazing price. So, win win situation. I had read alot of reviews talking about how it only eats the high velocity rounds. s\So, i brought some Remington thunderbolts, Winchester bulk hollow points and a few CCI mini mags. i was nervous about running the Winchesters and Thunderbolts, but they both shot very well. out of 40 shots of each ammo type, not one FTI or FFL. the CCI's performed flawlessly as perdicted. However, the trigger pull i wasn't such a fan of. you have to pull it back an unusual distance, I kept jerking whenever i pulled the trigger i was thrown off target. over all, great gun

Anton J. from Des Moines, IA on Fri, 12 Feb 2016

we have had our Mosquito a few months now and have found that federal and cci mini mags work really has 1200 rounds thru it and has been alot of fun to shoot! I had to learn that too much lube can cause problems with this(and most from what i have heard)pistol.

Clarence F. from Orion, IL on Wed, 10 Feb 2016

I had some slight issues at first with this gun, but .22 ammo is often troublesome and after I changed the recoil spring all problems were gone. It is really fun to shoot and very accurate. Very glad I decided on Sig when there were many choices.

Howard C. from Syracuse, NY on Wed, 27 Jan 2016

I purchased a mosquito a few days ago. Already racked 200 cci's through it. Only 1 fte and 2 ftf's. Some people must be getting friday guns. mine is great right out of the box with a light coat of oil. once i get used to the sites and trigger pull i might just put a laser under the barrel for grins and giggles. dont shoot low velocity ammo in it and you wont get low performance. cant wait to hammer some tree rats with this!!!!!

Marvin H. from Gainesville, FL on Mon, 25 Jan 2016

No taunting, it sounds like you did everything the instructions asked for, but you got a "bad one", I got lucky with mine. I own a Sig P226 and it is one of my best pistols by far. I did the whole breaking in process just like the manual asked for paying particular attention to all details. Even with all the bad reviews, I still bought one. I used only CCI, cleaned & oiled after 200 rounds and put 600 rounds through it over 2 days. I had very few failures in the first 500 rounds and I only get them now when it is dirty or I use something other than CCI mini mags. I guess I am one of the lucky few that got a decent Mosquito. Also, from what I have read (and I could be wrong), Sig does not make this gun, they put their name on it and it does have a bit of a cheap feel to the slide itself. I have read that a few have had their slides crack in 2. I still love to shoot this gun and it is what I taught my 14 year old daughter and her friends on, but it seems like it is a bit of a gamble as I would say half those that own one wish they had bought something else....

Travis H. from Birmingham, AL on Mon, 25 Jan 2016

I have been resisting submitting my review of the SIG Mosquito 22LR only because of the emotions that it will stir up. First, let me state the reason I choose this weapon. I wanted something to train my young boys (8 and 10) basic firearms safety and handling, and so my 17 yo would have something fun plinking with. I also picked this due to the design being similar to most carry weapons, but a little smaller for the small hands to handle but one I could also have fun with. I was unable to to use the weapon for the purpose I intended. Using Mini-Mags, (yes, with the right spring, and after cleaning it) I grabbed my 17 year old and went to the range with 6 boxes of 100 CCI Mini’s, and a 22LR cleaning kit to “break it in” (something I never had to do with any weapon I have had.) We planned on spending the whole day there. Using the first 500 rounds to get use to the safeties, trigger pull, sights, ect. Every 50 rounds I swabbed the barrel, and oiled the ways. Every 100 rounds I field stripped it, let it cool down and gave it a good cleaning. During the first 500, it was getting frustrating with all the FTF and FTE. There was also a problem with the slide not locking back after the last round (on a new mag??? from SIG??? Nahhh). I would like to say that after the 500 break in shots things got better, but I can’t. It averaged 1 failure to feed every ten rounds. The failure of the slide to lock back was hit or miss. My son said “this pistol is not fun.” I stopped in to a local gun shop and asked about these issues. To sum up the conversation; “either they work well, or they don’t well…work” With so many Issues there would be no way in the world that I would trust this the safety of this weapon with my two youngest. I was able to trade it in on another pistol that I and my older son could use, and a “mouse gun” for training my smaller boys. If you find a used Skeeter that works well (and you can), buy it, keep it, love it. As for as buying a new one. Go to Vegas if you want to gamble… This is why I was concerned about writing a review of this weapon. I like to grade the weapon based on how it performs for it’s intended purpose, but I can’t because I never got to with this one. IMHO that should be considered by the reader. I was told however by a friend and even my son to submit it. Also before I grade this, please be aware that I like SIGs. I have a P250 Compact and it is a well-made and functioning weapon, so don’t think that I just want to write a hit piece against SIG SAUER. But because of my experience with this gun, I give it two bullets (for ergonomics and design only). Go ahead, let the taunts begin!

Jeffrey M. from Hampton, NJ on Thu, 19 Nov 2015

I finally decided on the Mosquito and fired it at the range today Started out with CCI mini mags for 100 rounds AND then a mix of Remington. It performed flawlessly for about 250 rounds. Then a couple of jams which I attribute to a dirty gun. Very nice shooter!!

Harvey M. from Lewisville, TX on Wed, 11 Nov 2015

I bought a Mosquito for my wife, but I like firing it myself - I modified the the breach ramp and then fired 400 rounds of CCI mini mags through it without a single jam - Setting the sites is a little touchy, at 15 feet they are dead on, at 30 the rounds are within a 4 inch grouping at center, at 75 feet the rounds are still within a 4 inch grouping but off to the left by 2-3 inches - rapid fire at 15 the rounds are within a 3 inch grouping to center - adjusting the the rear to the 75 foot range throws the 15 feet distance off, so its a little give and take - Good gun and cheap to use -

Charlie S. from New Windsor, MD on Sat, 7 Nov 2015

I bought a Sig Arms Mosquito as a more-or-less gift for my daughter (she's 20) as an easy tool to teach her how to shoot late last year. First time at the range with the gun (and her), it didn't take long before we started having problems. first it was FTF, and not long after that it was FTE. And yes, we were using the recommended Mini-Mag ammo. I sent the gun back to Sig Arms under warranty, and after several weeks it was returned, with a report that they had adjusted the ramp to the chamber, and that it tested successfully. I finally got around to taking the gun back to the range a week or so ago, and put about 250 rounds through it. The gun seemed to work fine...except that every 50 rounds or so it would malfunction, with FTF, FTL or FTE, more or less at random. That was enough for me. I was not about to have my wife (who wants to shoot too) or kid using as a training weapon a gun that randomly malfunctions. I took it to Gander Mountain with the intention of trading the Mosquito in on a Ruger Mark III, but ended up with a Browning Buck Mark instead, and glad I did. I know Sig is a good gunmaker, but I really think they dropped the ball on this one.

Martin W. from Plant City, FL on Thu, 5 Nov 2015

I purchased the Sig Mosquito about a month ago. This gun does not like Remington ammo. The manual recommends CSI ammo. I have had several FTE with the Remington ammo. Works perfectly with CSI ammo just like the manual says. Love the look and fel of this gun. I purchased this gun because it is cheap to shoot and a good gun for my wife and daughter to start with. The magazine is not very heavy duty, but that could be because it is a .22

Eric R. from Willow Springs, IL on Fri, 14 Aug 2015

I've put about 300 rounds through mine since I got it for Christmas. I've only had one stove pipe. It's been great and awesome to shoot. My wife really likes it also. And pitbussrescue is right, keep it cleaned and oiled.

Mitchell R. from Pike Road, AL on Fri, 14 Aug 2015

bought a early model of the mosquito,pre "07.shot about 10,000 rounds over 2 years, gun does like to be spotless,so keep it clean.trigger failed and my dealer sent it back and SIG repaired it at no charge.shot another couple thousand rounds thru it and the slide cracked,once again my dealer sent it back and about 6 weeks later SIG replaced it with the up to date model for no charge.all of this was well past the end of warranty.gun is particular about ammo.switched over to federal automatch and gun loves it.could not be happier with SIG customer service or product. great accurate little gun,my favorite gun at range as you can tell by number of rounds put thru it. no job,too much time on my hands.CLEAN CLEAN CLEAN ,OIL OIL OIL

Eric R. from Willow Springs, IL on Sun, 5 Jul 2015

I got my little "Skeeter" for Christmas. I took it out yesterday and what a sweet little shooter. I put 100 rounds through it before it got too dark. I had one stove pipe out of this 100 rounds so I am very pleased. My friend put a few through it and just fell totally in love with it. He thought his Browning was nice this the Skeeter. I agree with EastLos, if you follow the manufacturer's suggestions, there shouldn't be any problems. I stripped it and cleaned it as they suggested. Used CCI mini mags and it shot as I expected it should. I was a little leary from some of the review, but following them I think I figure out what was going on and took care of that. More reports as I run this through it's break in period. Safe shooting everyone.

Ed C. from White Pigeon, MI on Sun, 5 Jul 2015

Just picked this up for my son for Christmas. Despite all the reviews this is the one that felt the most comfortable to him, so we got it. We made sure we did as manuel required and cleaned and oiled prior to first use. We used CCI mini-mags and I must say was very pleased how the gun performed. We blew threw 150rds. on first outing and had only 2 FTE right at the end. I contributed this to it being dirty. This was my 13yr old son's first time shooting and he can't wait to get out again this weekend. I must say I feel glad the gun peformed this well on it's first outing. I'm sure it will get even better as break in continues. All I can say is if handled as manufacturer suggests the gun should perform just fine.

Marvin H. from Gainesville, FL on Thu, 18 Jun 2015

Mine is 6 mnths old and I have about 2,500 rounds through it. I broke it in, clean it often, keep it libed and put a drop on the feed ramp every time I shoot and I have had less than 10 jams and they seem to be magazine related. I think it's a case of this gun was not made by sig and the quality fluctuated. It depends on how long it sat on a shelf before you got it as the ones made a few years ago were problems. This is the 3rd time I have heard a slide cracked. Maybe this won't last long, but to date, mine has been great and very accurate. Sorry to hear about the rest spending $400 on a lemon

Terrence S. from Baton Rouge, LA on Fri, 29 May 2015

I have had my mosquito for little over a year now. I must say I really like the looks and feel of the gun. I am not really impressed with the limited one year warranty. Every gun I have ever purchased had a lifetime warranty and with the SIG name didn't even bother looking into it before purchase. When I had the mosquito out on the range for the first time it jammed like crazy(FTF and FTE). Both springs were used and all types of ammo. Bad day I think we got maybe 100 rounds though before we got sick of it. The second time we had it out it did better, but still had a jam fest (FTE,FTF). This gun is very ammo picky. Doesn't even like the mini mags. We fought thru maybe 200 rounds that session. Had a gunsmith take a look at the gun and was not able to find anything wrong with the gun. His suggestion was to put 1000 rounds thru it and come back then if I still had issues. Then have been to the range a few more times and used CCI Stingers. Finally found something that worked real well. No issues with FTE or FTF till about 185 rounds. Ran my Hoppes bore snake thru and continued to let em rip. Shortly after started to have FTE. I have found when this gun gets dirty it starts to have issues. I think when this gun gets broken some more the issues will get better. They already have gotten better with every range session. The accuracy of this gun is very good. It has decent sights and able to line up with the target well. Decent groupings at 7 yards. Even the wife shoots well with it. I really like the light trigger pull helps with accuracy. The gun breaks down really easy for cleaning compared to other .22 hand guns.

Sig Sauer Mosquito Questions & Comments



Eric R. from Willow Springs, IL on Thu, 14 Jul 2016

Hey cruiser, is it lubed up real good? Just asking. Also you might run a little oil on the ammo.

Eric D. from Rossville, IN on Thu, 14 Jul 2016

check out my post of 11/7/11 and polish the bore. Mine was sent back to Sig as well, never worked so good after the polishing job. I still have to work on the magazine to solve the rest of the problems.

Damien K. from Euclid, OH on Wed, 13 Jul 2016

My lease favorite gun by far. FTE/FTF's galore. Even after it was sent back and reworked.

Randal P. from Gastonia, NC on Mon, 11 Jul 2016

I read about polishing the receiver and chamber which I did over the Christmas break. Golly, what a difference. I was jamming every 3rd or 4th shot. I've only been able to test fire it, but it went through 18 rds of CCI Mini-Mag without a problem. Never fired that many without a jam before. In fact, I have never fired more than 4 shots without a jam before. I hope I'm headed to the range tomorrow, I'll let you know about jams with different ammo.

Mitchell R. from Pike Road, AL on Mon, 13 Jun 2016

Mosquito still shooting great. No fails at all with it since switching to federal automatch ammo.too bad some of you have had bad time with gun.all i can say is clean and oil.gun likes to be wet. Early models seem to have more problems.very picky about ammo.cci mini mags in the bulk box work good but very waxy

Rod C. from Laurel, MD on Sun, 5 Jun 2016

Sorry folks, those of you who love the Mosquito....more power to ya. But those of you who love it and tolerate the frustration of the constant FTE's and FTF's that this pistol provides will probably love and tolerate my manic Mother in Law too. Impossible !!

Eric R. from Willow Springs, IL on Wed, 18 May 2016

CCI mini-mags. I haven't had any issues. I feel for the people that have. I'm happy I got a good one.

Harlan K. from Galion, OH on Wed, 18 May 2016

I cleaned the chamber bore of my Mosquito and polished it, after that it fired the MiniMags without a problem but still would not fire ANYTHING else without failures, mostly fail to eject. It would completly close on an empty case, I purchased a new recoil spring and started cutting on it (which is not recomended but I tried it anyway) I got the spring so short that I had to help it close and hold my thumb on the side of the slide to keep it closed. When fired like this I noticed the slide actually bounced off the hammer and reclosed before it even recocked the hammer. It was not a limp wrist, a strong recoil spring, or a tight chamber that was the trouble with mine, the hammer spring was so strong that the bulk ammo could not even recock it much less throw the empty out beyond the hammer spring. I was told by Sig and by local trigger specialists that there was nothing they could do about it so I put the original recoil spring back in it, cleaned it and got rid of it! I still have both of my P239-.40's and my P226-9mm I love them and would not think of getting rid of either of them! I just gave up on the Mosquito. Good luck Hotrod

Howard C. from Syracuse, NY on Tue, 17 May 2016

Do not, repeat do not feed this pistol Winchester 1280 fps, 36 grain hp, copper plated bullets. They are junk. I shot 8 magazines of them and had 2 or more fte, ftfs with every magazine. It is a fuction of the shape of the bulllet head. Look at the shape of cci's or federals and if any others dont match that or are more flat nosed save em for your rifles bustin varmints. Lesson learned!!!!!!

Bryan N. from Stevenson Ranch, CA on Tue, 26 Apr 2016

Reading about FTE/FTF in these reminds me something that a lot of people don't realize. lots of .22's experience issues like this and it's very, very important to hold these with a very firm grip. Even a hint of what people call limp wristing ... even if you don't realize it will cause issues with these and guns like it feeding and ejecting. It only has the power of the round to rack the slide and when it is as underpowered as the .22 cartridge any absorption of that recoil my your hand/wrist can cause issues like this. I know it sounds crazy but holding these firm/tight is much more important for the function of the firearm in this case than you can even imagine.

Marvin H. from Gainesville, FL on Mon, 25 Jan 2016

I agree as far as quality and Sig's reputation. My top 3 pistols I own are H&K, Sig and FN. Sig quality is extremely high IMO and this little .22 may be giving them a bad reputation on the low end market. Like I have stated before on this forum, mine works great and I am not willing to part with it. It is the only .22 pistol I own and the winter camo which first caught my eye led me to look into it. I do see folks complain about theirs, yet they did not follow the specific ammo and break in procedures. You obviously did and still had bad results.

Travis H. from Birmingham, AL on Mon, 25 Jan 2016

Outlaw54, wait, the night is young... SIG needs to reconsider putting their name on this weapon if they don't manufacture it. I know some people who say it is actually made SIG SOUR..., not SIG SAUER! My biggest fear is that someone who doesn't have experience with other SIG weaponry may assume that this weapon defines SIG quality. WHICH IT DOES NOT! For whatever reason, Sig dropped the ball on this one.

Jeffrey M. from Hampton, NJ on Tue, 19 Jan 2016

The last time I took it to the range I had 4-5 FTFs in 200 rounds.I thought the gun was supposed to get better? Oh well. I am pretty sure a feed ramp polishing will take care of that, but when I spoke to the Sig rep he said if I knew what I was doing it shouldn't void the warranty. He recommended I send it in to the Sig gunsmith anyway after I hedged a bit. What the hell, they are paying for the shipping.\The only draw back is UPS will not accept firearms at their stores. I'll have to go to the nearest hub..........................60 miles out of my way.

Tony O. from Clinton, SC on Tue, 19 Jan 2016

Sounds like you are pretty satisified with your Sig 22. I am planning to get one and shoot mostly mini mags in it.

Jeffrey M. from Hampton, NJ on Fri, 25 Dec 2015

Range report 230 rounds only had 3 failures to lock back

Doug M. from Canon, GA on Thu, 12 Nov 2015

Again I have found if you keep the Mosquito clean and VERY VERY well lubed it will shoot without any problems. It will eat any ammo you feed it. Well atleast mine does anyway. I boought this gun for my wife buy she prefers her Colt single action 22lr. I like shooting it. It's accurate and in expensive to shoot.

Eric R. from Willow Springs, IL on Thu, 5 Nov 2015

Hey orange, but follow the book and you shouldn't have any issues with the "skeeter". I really like mine and haven't had any issues with it. I think it's a great little shooter. Enjoy!

Ed C. from White Pigeon, MI on Sun, 18 Oct 2015

Finally decided to get rid of our mosquito. We had some feeding issues, but sent to Sig and took care of it without a problem. I will admit seems to operate flawless now, but having trained my wife and son on this little plinker everyone seems to be over it. Both my wife and son have moved on to shooting 9mm and seem to love it. I am going to re-cop at least half my money back and put it towards a .40cal. It was fun while it lasted, time to move on to the next episode however.

Harlan K. from Galion, OH on Sat, 3 Oct 2015

I unloaded my Mosquito at a gun show this past weekend, traded it and some extra magazines for a new LCP. glad to get rid of a headache and have a weapon that I can depend on and is not so dam picky with ammo! I hope all of you have much better luck than I did with mine. Just an added note for anyone who may be considering purchasing ANY OTHER SIG SAUER product, please do not judge other Sig products based on the Mosquito! My wife and I both carry Sig P239 .40 's and I have a P226 9mm. all three are absoutly top of the line weapons! I am glad I purchased the others before the Mosquito, if the Mosquito had been myfirst Sig there would not have been another. Hotrod

Doug M. from Canon, GA on Thu, 18 Jun 2015

We have over 2000rds through my wifes mosquito. It is a great gun. I usually use Remington or Winchester bulk ammo. I run the gun wet and have no problems with it at all. I'm sorry to hear so many problems from other owners.

Sig Sauer Mosquito Photos

12 Photos

Sig Sauer Mosquito Videos

185 Videos














  •  English  •  Español  •  Deutsch  •  Русский  •  

©2018 !