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Sig Mosquito Trigger

This is a discussion on Sig Mosquito Trigger within the SIG Sauer Pistols forums, part of the SIG Sauer Forum category; Morning All! I am new to this forum and to Sig Sauer. I have waited a long time to purchase one and finally end of ...


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Old 04-24-2013, 06:15 AM   #1
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Cool Sig Mosquito Trigger

Morning All!

I am new to this forum and to Sig Sauer. I have waited a long time to purchase one and finally end of last week I did. I purchased the Mosquito. I looked at the Ruger Mark III, Walther, and Sig. I selected the Sig in part because I already own Mark I, and in part because the dealer suggested I would love the Sig and not be so about the Walther. He said the Walther had an "ugly" trigger. AS I am mainly a plinker, trigger is quite important. Well, to make a long and anxieties story short, I am not pleased with my Sig. Why? The trigger is awful! Of course, gun dealers are like used car salesmen - no such thing as getting your money back. Now this gentleman says the Sig Mosquito has a combat trigger. Nice to have known that up front. Kind of reminds me of when I purchased the 92F - one of the first with the rosewood hand-grips, presentation box, and awful trigger. Of course, this gun was made to be a combat gun. I could understand that, but the Mosquito? It is a .22. Who on earth would ever consider taking a .22 into combat (exception - Mossad)

At any rate, I read somewhere there is a trigger fix. Sig shows this on their site but I can't find anywhere what parts it would take and where to get them. I am quite capable of tearing the gun down and replacing any parts necessary. I am sure it is a great gun and I suspect I will keep it but would really like to deal with the trigger.

Thanks - John
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Old 04-24-2013, 06:27 AM   #2
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Re: Sig Mosquito Trigger

Hi John.. Welcome to the forum and the "special" world of the mosquito.. LOL

There is something called the trigger fix. Google it and you should find it.
I started working on it last night. I'm doing things in stages so "I" understand what is what. I just disassembled mine last night and have some tips. I'll have to get to my laptop though..

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Old 04-24-2013, 06:34 AM   #3
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I too have a Mosquito and had similar complaints about the trigger. But there is hope!

I took the trigger job instructions document I found on the internet several years back and cleaned it up and made it into a PDF document. I had never done this amount of work to a gun but found the work very easy and it greatly improved the trigger.

Here is the document: http://sdrv.ms/12I14dt
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Old 04-24-2013, 06:43 AM   #4
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Annnnd I'm back.

First off the Mosquito gets a lot of flack, as do owners.
We get accused of buying it just because it looks tactical and we should have bought a Ruger MkII. Well maybe we should have.. But I bought it because of SIG's reputation and price. I paid just a little over $300. Also I'm willing to get my hands dirty, to me "fixing it" is half the fun. Now the trigger fixes I have seen involve polishing or "stoning" some of the internals. I wouldn't get into this without being confident in my skills.
My first step last night was polishing the trigger bar (it is stamped and has quite a burr) and polishing the pack slightly. That's as far as I went. Things to look out for:
The slide release lever and the trigger bar are held in place by the frame. So when you remove the "pack" from the frame that stuff will want to fall/fly off. I took pictures as I went just to be safe. I'm not sure if the how-tos online cover dis-assembly. I can write that up for you if you want.
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Old 04-24-2013, 06:48 AM   #5
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I forgot to add that the document I posted a link to is a PDF and includes disassembly / reassembly instructions as well as lots of pictures. I followed it very carefully and it was pretty simple to do. All of the polishing I did was with a Dremel (cotton or felt attachment) and metal polishing compound. I was amazed at how much it improved things.

Let me know if you decide to use this technique.
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Old 04-24-2013, 06:51 AM   #6
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Quote:
Originally Posted by TechDoc View Post

Here is the document: http://sdrv.ms/12I14dt
Wow!
Great write up and great idea using the ziplock bag!!
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Old 04-24-2013, 07:05 AM   #7
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Quote:
Originally Posted by TechDoc View Post
I too have a Mosquito and had similar complaints about the trigger. But there is hope!

I took the trigger job instructions document I found on the internet several years back and cleaned it up and made it into a PDF document. I had never done this amount of work to a gun but found the work very easy and it greatly improved the trigger.

Here is the document: http://sdrv.ms/12I14dt
Excellent work! I purchased my Mosquito just a couple months ago. I've only got ~300 rounds through it so far, but I haven't had any issues with the trigger. Its a little tight, but it works well.
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Old 04-24-2013, 09:52 AM   #8
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Well I snuck off to the range at lunch..
Shot 200 rounds with one mag giving me failure to feed.
I attribute that to me riding the slide. All the rest feed perfectly.
This was after polishing the ramp, before polish I had a FTF every mag.
(sometimes several)
Trigger feels much better, smoother. I shot a mag in DA and it was still scratchy but better. I'm going to work on the pack. I didn't polish it as much as the bar.
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Old 04-24-2013, 10:05 AM   #9
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Good comments!

Thanks everyone for the ideas. Makes sense that polishing the trigger parts would help. What I was actually talking about is replacing certain parts - the Sig web site calls this the "Short Trigger Reset Package" in their Custom Shop Service tab. This job costs $99.00 and you get the original parts back. I am thinking if I could find this kit I could do it myself. Anyone out there heard of this? According to the Sig site, this shortens the trigger reset travel by 60%. This is exactly my issue with the gun.

JM
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Old 04-24-2013, 10:11 AM   #10
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Ahh I hear you there. that would be nice. I think Wolf makes some springs but I didn't know about reducing reset length. Keep us posted.
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Old 04-24-2013, 10:24 AM   #11
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I don't think you can get the SRT on a Mosquito. To be completely honest, a Mosquito isn't a Sig. Its made by a company named GSG. They make the gun for Sig. That's one of the reasons that the internal design of the Mosquito is nothing like a Sig. The fixed barrel and strange recoil spring/guide rod design are also clues.
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Old 04-25-2013, 08:33 AM   #12
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Sig Mosquito Update

Thanks Printice - you made my day! I sure hope you are wrong about someone else making the gun but you sound like you know what you are talking about. If true, I don't know whether to be pissed or just enjoy a nice gun that at lease has the Sig name stamped on it

I checked the Sig website and they (of course) do not mention that fact. In fact, they claim it is their P226 reduced to 90% eluding to the inter-workings being the same. I do not know enough about Sig brand to know.

As a side note, I did strip the gun down and polished many of the parts. Yep - many are rough but the results were amazing. Reminds me of a S&W Sigma 9mm I bought new. Inside stamped parts were very rough. Polishing them made considerable difference. Guess all they do now is stamp them out, jam them together, and ship them out. Whatever happened to craftsmanship - no, PRIDE in craftsmanship!

Thanks

J
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Old 04-25-2013, 08:50 AM   #13
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Re: Sig Mosquito Trigger

J,
The mosquito is made by GSG, not SIG.
The only resemblance to any other SIG would be in appearance..

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Old 04-25-2013, 08:50 AM   #14
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I don't want to burst your bubble about the GSG manufacturing, but I am very certain that it's true. If you do a Google search, you'll find many references to GSG making that particular gun. The Mosquito definitely feels and operates like a Sig, but isn't.

I don't think there is any reason to be upset about this news. Its a great little gun that is an absolute blast to shoot. I love mine, and knew that it wasn't made by Sig before I purchased it. Enjoy it for what it is. That's how I see it.
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Old 04-25-2013, 09:27 AM   #15
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Re: Sig Mosquito Trigger

What he said...

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