Sig Mosquito Issues

[Kestryll]

My Dad recently picked up a Sig Mosquito and has been to the range with it twice so far and both times it's had serious feeding issues.

Frankly the damn thing is a jammatic.

So what are the known issues with these and are there any common 'fixes' out there or is Dad just hosed?

[yoitsbruce]

there finicky

[nickarino]

use CCI mini mags when it comes to ammo. If you are willing to do a little work to it, polish the feedramp. I took superfine sandpaper (600+ grit) and polished it shiny, then took a dremel and buffed it with a cloth wheel. Now it eats bulk pack ammo all day with no malfunctions. It really made a world of difference

[d4v0s]

also hitting the feed ramp with some jewelers rough works wonders. I have also seen this done with old surplus pistols.

And yes try running cci mini mags. They dont like bulk remington or winchester

[Recession]

Use the higher velocity stuff, it relies on the recoil to load the next round if I recall correctly.

[Deft]

Mine will work with CCI Mini-mags or Remington Thunderbolts (both 40 gr). Its a really picky little pistol.

[bjl333]

+1 on trying different ammo. My Mos likes some Remington stuff. Keeping a stiff wrist might help also.

[Kestryll]

My fault, I forgot to mention all the firing with it so far has been with CCI Mini-Mags as recommended.

The more I think about it the more I think I need to get this pistol from him and do some maintenance and tuning.

A thorough cleaning, polish the ramp and disassemble, clean and deburr the magazine and follower.

[JohnFLand]

Read this: http://sigforum.com/eve/forums/a/tpc...m/54410021/p/1

[mif_slim]

My Dad recently picked up a Sig Mosquito and has been to the range with it twice so far and both times it's had serious feeding issues.

Frankly the damn thing is a jammatic.

So what are the known issues with these and are there any common 'fixes' out there or is Dad just hosed?

Sure there is. Buy a new 22LR pistol!

I bought one and I'll never go back to it. I traded it in for a MK 22/45 and I never looked back.

[tlillard23]

send it back to sig. They had a big batch of bad guns.

[yelohamr]

After polishing the ramp, my Mosquito shoots all high velocity .22 LR. Lately I discovered it will shoot Aquila Sniper Sub-Sonic 60 grain .22 LR, which is a 60 grain bullet in a .22 short cartridge.
Keeping it well oiled helps too.

[Ledbetter]

If it's acting like that with MiniMags, I would consider sending it back before you work on it yourself. Good luck.

[eville]

Run it wet. There is a video on YouTube.

[Diesel-Gunner]

use CCI mini mags when it comes to ammo. If you are willing to do a little work to it, polish the feedramp. I took superfine sandpaper (600+ grit) and polished it shiny, then took a dremel and buffed it with a cloth wheel. Now it eats bulk pack ammo all day with no malfunctions. It really made a world of difference

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