[JJW]

First, I want to say that I just recently found this forum and I think it's great. There is a lot of great info shared here.

I bought a used complete trigger group lately that has a problem I've never had with a 10/22. It seems that it has all factory parts, and someone has tried to do a trigger job. I first thought it was OK. The pull is about 2 1/2 lbs., and it is very smooth with almost no creep. The trigger group passes all the safety tests I could think of, and all that are mentioned here. I did not notice the problem until I put it in a receiver and test fired it.

If you hold the trigger down when you fire the gun, the sear catches the hammer fine, but when you release the trigger it fires again. (Not a fun surprise the first time!) If you pull and release the trigger with no delay it functions perfectly.

The hammer and sear both appear to have been stoned, so I've already got a replacement hammer and sear, but I was just curious if anyone else had ever had a trigger group do this, and can you explain how it does this. If I replace the sear only, it fixes the problem and raises the pull to about 3 1/2 lbs.

Thanks!
JJW

 

[050]

Without seeing it, it's strictly a guess, but after staring at a trigger assembly for fifteen minutes, I'm getting the feeling it may have to do with a combination of a negative rake angle on the hammer/sear connection and maybe some slop in the pins...

??????????

Ron

 

[395]

Engagement distances???

Look through the large "hole" in the right hand side of your trigger group. You can see the hammer/sear engagement through this hole. It sounds to me as though the sear may not actually be catching your hammer. This can be due to a multitude of things, first and foremost to mind is the "trigger job" you mention. I fear that someone has reduced your hammer/sear engagement too much, and thus resulting in your F/A mechanism. The pretravel being almost nil, also raises another suspiscion. Perhaps the disconnector is not fully releasing the hammer, or is not fully grabbing it. This "could" result inthe condition you are describing.

REGARDLESS, you need to remove the offending parts and leave them out until a solution is found! Trial and error are your best bets. Happy Hunting!

Sincerely,
GAU-2

 

[4147]

Some folks have paid to achieve that...

Awhile back some enterprising soul came up with a modification for the Ruger Mini-14 that would let the gun fire once when you pull the trigger, and again when you release it. The obvious intent was to double the effective Rate of Fire since each front-to-rear and back movement of the trigger finger releases two rounds instead of one.

The interesting thing here is that ATF gave the inventor a ruling that it was *not* a machine gun since the law defines a machine gun as (among other things) a firearm which fires more than one round by a single function of the trigger. While it may not intuitively be obvious, pulling the trigger is a function and so is releasing it. His invention (and your gun) therefore only fire one round for each function of the trigger.

Now whether or not yours does so safely is another question, but if the bolt is closed it would seem safe since this is a simple blowback operated firearm.

Of course if your intent is accuracy and not bullet-hose, then all of the above is nothing but interesting trivia.

 

[Elkein]

Hush doing that with the mini 14 is real simple, but you have got me on how to make a 10/22 consistantly do it, I'd have to tear down the trigger and anylize it.

 

[JJW]

Thanks to everyone for your replies. The trigger assembly does this consistantly. When I first received it, I checked it out by hand and then went to test fire it. I ran almost 100 rnds. through the gun before I happened to pause releasing the trigger and noticed the problem. Then I shot another 100 or so rounds and it does this everytime. If you imediately relaease the trigger (as normal) the trigger functions perfectly. If you pause for a split second it will fire on the release. I am very knowledgeable about how the 10/22 action works, but I can't figure this out. It don't think it's the hammer because I've replaced the sear and it fixes the problem, but the sear seems to have been only slightly polished.

I've never heard of the trigger for the mini 14 Hush22 mentioned, but I thought this trigger group I bought was interesting.

Anybody can screw up a trigger group and get hammer follow thru, but I thought this was an interesting (But still dangerous) screw up!

 

[Educator]

I believe GAU-2 has the answer your looking for...his analysis is right on par with other observations I've made.

 

[knitepoet]

Sounds like a sear problem.

When you fire by pulling the trigger, the disconnector catches and holds the hammer until you release the trigger. When you release it, the sear SHOULD catch it, readying it for the next trigger pull. In the "trigger job" someone apparently botched either the engagement surface on the sear or hammer (or both) causing it not to catch when the disconnector realeases the hammer. If you want just ONE shot for each trigger cycle, I'd suggest planning on replacing both the sear and hammer. Either one MIGHT fix it, but both DEFINATELY will. Stock parts aren't terribly expensive, or if you're wanting a better pull than stock, one of the VQ kits with both should cure the problem.
Let us know how it turns out..
PLEASE
Paul