Sig Sauer Mosquito - .22LR Pistol with 3.9" Barrel

Sig Sauer Mosquito

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The hottest pistol offering from Sig Sauer is the Sig Sauer Mosquito.

Featuring a polymer frame chambered in 22LR, the Mosquito is 90% the size of a P226 and the ideal choice for hours of shooting fun.

The Mosquito features a wear-resistant polymer frame outfitted with an integrated accessory rail. The slide features adjustable sights, and along with the rugged blowback system, fixed barrel and superior ergonomic grip, the SIG SAUER Mosquito delivers traditional Sig Sauer accuracy.

Additional safeties include an internal locking device and slide mounted ambidextrous safety.


Additional Information

Manufacturer SIG
Cost Per Round 0.0000
Condition New
Caliber 22 LR
Manufacturer SKU MOS22B
Capacity 10+1
Sights Included Fixed
Action Blowback
Color Black
Width 1.5"
Height 5.3"
Length 7.2"
Weight (empty) 24.6 oz
Barrel Length 3.9"
Sight Radius 5.5"
Safety Type Manual
Frame Type Polymer
Detachable Magazine Yes
Trigger Operation Double-Action / Single-Action (DA/SA)
Magazine Capacity 10
Case Included Yes
Firearm Size Full-Size
Series Sig Mosquito

Customer Reviews

High velocity ammo required - Review by Bob
You must shoot high velocity ammo or it will jam. Changing to good ammo, no jams and a pleasure to shoot. (Posted on 12/6/13)
Not what I expected - Review by Rickle
I bought one, thinking the wife would get used to medium to full sized pistol grips. Problems with FTF, stovepipe. It would just jam up for no apparent reason. Probably just needs a tune up. Maybe. It's going on the block, fer sure. Sig makes some really great 1911s, but this one, not so much. (Posted on 8/2/13)
has jamming problems during fire - Review by anjum saeed
I got fed up & sold it out embarrassing experience (Posted on 3/15/13)
Well made but has horrible trigger pull and is finicky on ammo. - Review by Bullet1943
After spending a day at the range with my buddy, shooting his new Mosquito, we noted that #1: It definitely is finicky about what ammo you use. Pretty much anything other than CCI ammo, will cause various types of misfires. It comes with an spare heavy duty recoil spring which did nothing to solve misfires, stovepipes and failures to eject. So I can't figure out what it's for.
#2: It has a very long and stiff trigger pull. Surprisingly bad, for Sig's.
Quality of workmanship appears typically Sig, very nice. Looks good, and fits the hand exceptionally well. Would I buy one? No. (Posted on 3/1/11)

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