SKS double fire

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Well, I've had everything apart but still have problems. Upon closer inspection, the retaining pin appears damaged/burred. Also interesting is that the pin won't rattle anymore. The pin actually sticks BACK with the pin retracted. If I gently poke the rear of the pin it will pop forward, but then I give it a shake and it sticks back.

I had a H style buffer pad installed and it is beat to schit. I wonder if that also contributed to it?

I took the bolt out of a Russian SKS and installed that for now. I'll see how it works tomorrow. I'm thinking I need a new firing pin and a retaining pin for the bolt. I guess when I think about it, this rifle has chewed through several thousand rounds of ammo with no issues and little maintenance, so a pin that gets sticky probably isn't out of the ordinary. :)
 
Gatehouse said:
I had a H style buffer pad installed and it is beat to schit. I wonder if that also contributed to it?
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There were some striking "things behind bolt" issues with the L1A1 rifle. If the hammer isn't being pushed back far enough, it might not catch the sear reliably. The test would be live round followed by dummy round, what happens when you pull the trigger on the dummy round, does it click.

The textbook answer is don't use the rifle until it is fixed, of course.
 
The "recoil buffer" is not required on these rifles. If anything the buffer causes short stroking of the carrier.
These rifles have been around for how many years and the little piece of crap rubber is beat up. Tells you something doesn't it.
You could have bought a six pack for the money spent on the buffer.

Do you have any pics of the pin itself? Perhaps some of the bolt too. Certainly looks like the retaining pin was in sideways.
 
Porschemann said:
a worn out firing pin gives you no-fire, not double taps. However a sticking firing pin (corroded, bent, etc) can cause problems. Take it apart. That pin is supposed to float. If it isn't floating very freely, then you have identified your problem.
Click to expand...

Shake that bolt assembly if you can't hear that pin moving it needs to be cleaned better. 2nd Gen Murrays springed pins have the bugs worked out.
 
Also look at your bolt face. On my son's Chinese SKS a burr was starting to develop around the striker hole. I just used a countersink bit twirled between my fingers to chamfer the hole, and the issue was fixed. I have read that these burrs are fairly common, and sometimes have led to "cookie cutter" pierced primers. I wonder if it is possible that a very pronounced burr of this kind might set off the primer as the bolt went into battery?
 
Buffer was free of charge, but I don't plan on replacing it. There isn't anything really strange about the pin or the bolt. But obviously something in there is damaged. The bolt face is fine, though.

I think a new firing pin and retaining pin is on the menu. If the 2nd gen Murrays pin works well, no reason not to use one, as I really don't want doubling, even if the rifle gets a bit dirty.
 
I swapped out the bolt assembly with a one off a Russian SKS, and problem solved. I'll order a new pin and the retainer in that looks beat up. That retainer pin popped out way easy and I wonder if it got worn and worked itself loose, which caused some damage. Regardless, it's getting replaced :)

Who would have stuff like that? Western Gun parts? Brownells? Lever sells the whole bolt assembly for $45, that might be the easiest way to go.
 
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Is the buffer you had one of the little rubber pieces that sit behind the bolt carrier, inside the dust cover?

I have heard reports of these falling apart with time, and bits of it getting into the bolt carrier and trigger group and causing problems.
 
PJust an update....

I had swapped bolts and I also bought a bolt from Lever as a
Spare. Everything was working fine until I decided that the rifle needed cleaning, as it had been two thousand rounds since its last cleaning.

Everything got a good scrub and lubrication. The rifle looked so pretty and brand new. :)
Went to fire it and it was back to slam firing again! I dropped in the new bolt from Lever- slam fire!
Must be the sear, so to confirm I swapped trigger groups. Problem solved. I installed the first trigger group in the other SKS and it started slam firing too, so that's the problem for sure.

I guess it is worn down after the many thousands of rounds, and when it was lubed it just became too slick to stick back properly! :)
 
That is hammer follow, when the sear gets negative engagement it can follow the bolt, resulting in a double fire. Check the trigger group, my bet is when the trigger is pulled, the hammer rises, it should actually pull down a bit before firing. Drop it by the store next time you are around & i will fix it for you. Dave.
 
You can probably do a trigger job and fix it.... Not totally sure buy i know sooner guns you can help a slightly worn sear by stoning the right spot and getting the correct angle and clearance back
 
I'll probably just buy a whole new trigger group for $45. Then take the offending trigger out to hical if/when I get down there. I think I need a SKS with a mag adapter and Archangel stock etc anyway...:)

After 20 years and an easy 10K round count, I don't feel too bad about splurging $45 on a rifle that originally cost me $75 :)
 
before you buy a whole trigger group check to see if the sear/mag catch spring is weak or damaged , as this could explain the double tap you describe . so take spring from the russian tg and swap it with the one in the other tg and see if the problem persists. If there is insufecient spring tension the sear can basically bump fire itself, your sear may be just fine and small springs can be bought almost anywhere cheap.
 
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