AK "Doubles" When fired

[Ballistic Mule]

Here's the problem.I have a Norinco AK 47 that I have had since 1988 and when you're putting a very slow squeze on the trigger at times it will double fire. I'm guessing this is not a isolated problem as I've seen a SKS do it as well. I have looked around on other fourms and found no help and as this is the only fourm I've joined I am hoping to get some helpful info. The rifle has not had tons of rounds through it and has been well cared for as it was given to me by my brother on my eighteenth birthday. I don't post a lot but I do read these threads often and know there are lots of tinkerers out there. Thanks for any help you may have. Mule.

 

[WardenWolf]

It's bumpfiring. Some AK triggers are very sensitive and can bump fire easily if you do a slow target pull on it. The Tapco G2 trigger group is especially susceptible to this. The easiest solution is to simply replace the trigger group with an Arsenal two-stage one that has a longer trigger pull.

I personally recommend Dinzag Arms. He's a great guy to deal with and always throws in a couple extra things here and there. You can get the Arsenal 2-stage trigger group here:

http://www.dinzagarms.com/misc_parts/fcg.html

That will fix you up. My converted Saiga has the exact same problem, and I've been meaning to replace the trigger group but haven't gotten around to it yet. Replacing the trigger group on an AK is very simple, and can literally be done in 5 minutes or so. I do recommend you order the AK Retaining plate (AK ret plate) also listed on the page, as it makes reinstallation a lot easier.

 

[Ballistic Mule]

Thanks a million Wolf. It's a total distraction when you wonder if it's gonna double again.

 

[essayons21]

Also check the firing pin and the channel it rides in. When crud builds up here it can cause the firing pin to stick, causing slamfires.

Most folks don't take down AK bolts for regular cleaning, as they don't really need it, but its something to check every once and a while.

 

[WardenWolf]

Essayons21, good advice, but he said it only happens when he does a slow target pull. That's a clear case of bumpfiring. All he needs is a new trigger group and he's good to go.

Ballistic Mule, if you have any AK questions, hit me up. I know these guns inside and out. I did my own Saiga conversion and I've had it down to a bare receiver.

 

[HB]

If you dont feel like spending money on this, just work on your trigger control. Just pull it all the way back when it fires and after the boom, let it reset. This is what you have to do on alot of semi's with light short trigger movments... like tuned Service Rifles.

HB

 

[WardenWolf]

HB, that doesn't work well with the AK. A muzzle brake helps, but really you just need a better trigger group.

 

[Ballistic Mule]

My trigger control is just fine thank you very much.

 

[HB]

My trigger control is just fine thank you very much.

It was just a suggestion so you don't have to spend money on a new trigger group... Its very easy to double fire when you have a light trigger that resets during recoil and hits your finger again before you are ready.

You are very welcome.

 

[stubbicatt]

You can use a stone to create a step at the end of the trigger hook to increase pull weight.

This phenomenon you describe is a reason why service rifle trigger pull cannot be less than 4 or 4 1/2 pounds (I don't remember which), so that the secondary sear (disconnector) will be in a position to capture the hammer.

 

[Master Blaster]

The firing pin is sticking, clean the bolt and hose out the FP channel with brake cleaner or soak it overnight in Mineral spirits.

 

[WardenWolf]

No, no, no, Master Blaster. Again, he said, only when he puts a very slow squeeze on the trigger. Please read the whole original post before giving him wrong advice. And stubbicatt, that's a VERY bad idea. Modifying your own fire control group, unless you REALLY know what you're doing, is a good way to wind up in jail when your gun goes full-auto.

As for preventing firing pin stick, I just make sure it's lightly lubed with Breakfree. I check it periodically when I fully disassemble the rifle to make sure it doesn't need attention.

 

[W.E.G.]

The gun is bump-firing.

This is especially likely to happen when firing from the benchrest.

Be sure to always pull the trigger firmly, and all the way to the rear.

If you are trying to give the AK trigger the smooth-gentle treatment off a benchrest, you are going to get unintended bump-fire shots.

There is nothing "wrong" with the trigger, except for the fact that it is an AK trigger.
AK's are NOT well-suited for benchrest shooting.

 

[Hizzie]

Another vote for bump-firing. If you are not paying attention to it when it happens it will very much feel like a double.

 

[Delmar]

My norinco SKS bump fired on me the first time I took it out....my buddies were lookin at it like it was junk. But, the first round lifted the can up in the air about a foot, and the second round sent it sailing. They were very impressed and of course I had to puff out my chest at a complete dumb, lucky shot