I am going to take a Norinko SKS and put it into a bullpup stock. I am also planning on cutting, crowning, threading, and adding a comp or brake. I would like to hear from anyone that has ever done this. I am particularly interested in knowledge of barrel lenght that worked (cycled with off the shelf ammo) and those that did not (would not cycle, as in not enough gas).
SKS barrel chop
- Thread starter gb0399
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rcmodel
Member in memoriam
To be ATF legal, rifle barrel length has to be 16" or greater.
And OAL length has to be 26" or greater.
Those are the measurements you need to worry about.
If you cut the barrel shorter the 16", the comp or brake has to be blind pinned or welded on so it can't be removed.
rc
And OAL length has to be 26" or greater.
Those are the measurements you need to worry about.
If you cut the barrel shorter the 16", the comp or brake has to be blind pinned or welded on so it can't be removed.
rc
I am familiar with those requirements. My worry is that if I remove a portion of the barrel, say down to 16.5", I will be removing more than half of the barrel beyond the gas block. This will cut the "dwell time" (if thats the right word) that the round is in the barrel and beyond the gas block. I am worried that could make the rifle fail to cycle properly by not provinding gas pressure to the piston for a long enough time. This was the issue when they first tried to make dissapator M16s. But that DI and this is piston...
Snyper
Member
"Paratrooper" SKS's came from the factory with 16" barrels and are as reliable as the 20" models
BBBBill
Member
Snyper said:
True, but you need to know the gas port size of that configuration to ensure that you get the modified barrel to function correctly. It might be the same or not. A visit to http://www.sksboards.com , http://www.sks-files.com , http://forums.gunboards.com/forumdisplay.php?8-AK-And-SKS-Collector-Discussion-Board , or similar will get you that info pretty quick.
CLP
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In other words, the paratroopers have bigger gas holes.
jimmyraythomason
Member
I cut a Norinco down to 17 inches. It functions fine with any ammo. YMMV
BBBBill
Member
CLP said:
I don't know that about an SKS. Only the AR-15/M-4 series. That's the reason for the suggestion to go to the SKS specific forums for an answer.
So I have been researching the internet from one end to the other. Here is what I have found and what I believe to be true. 1. I am going to cut the barrel to 17 inches. From what I have read this should work, should. If not there are things that can be done with the gas port and the recoil spring, but I think it can be done. 2. 17 inches allows me to get an appropriate length that will meet federal regulations, and.. that can have the threaded portion cut off to 16.5 to meet MA regulations (residence of my family). 3. a couple of respected gunsmiths in my area declined to take on the barrel cut because of the barrels chrome lining. No worries, their reputation is tied to their work. So I am going to do it myself. I have done shotguns before, but not a rifle. I have read up on it and I am prepared. I will assume the risk of the chrome flaking. And of course, I will throw up some pictures of the project along the way.
rcmodel
Member in memoriam
Hope the cut & crown is better then the close-up picture!!!!
rc
rc
The crown was very hard to get a picture of. I finished it with 2000 grit wet/dry and 0000 steel wool, so the glare was throwing the auto focus off.
wabashman- that is the same stock I ordered. Did you color it and how, or did it come that way? and how long did it take to arrive?
wabashman- that is the same stock I ordered. Did you color it and how, or did it come that way? and how long did it take to arrive?
I used duracoat on it. Magpul FDE. As for how long it took to receive the stock, I honestly don't recall. I've had it for probably two years now.
thanks for the info. I think I am going to keep mine black. Did you, or anyone else, grind down the bolt so that the magazine could be removed while the bolt was forward? I did mine today. Everything appears to have gone right, but I wont know for sure till I get it all together and test it out.
I didn't grind the bolt down. Didn't even know this was an optional thing to do really.
If I shot it more I would have to do that but I probably shoot it five times a year. Just don't have the time to shoot and I have a range off my front porch even.
If I shot it more I would have to do that but I probably shoot it five times a year. Just don't have the time to shoot and I have a range off my front porch even.
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Speedo66
Member
Interesting, have a link to the info on how to do it?
https://www.youtube.com/watch?v=ysvpz1g9AeY
This guy is an amateur, but his videos are pretty well done. He also has videos on crowning a barrel.
One thing that I did different than he did was started with a angle grinder like he did to remove the bulk, being VERY careful of courese. Then I stepped down to a dremmel to finish the grind. Finished with 800 and 2000 wet dry sandpaper.
This guy is an amateur, but his videos are pretty well done. He also has videos on crowning a barrel.
One thing that I did different than he did was started with a angle grinder like he did to remove the bulk, being VERY careful of courese. Then I stepped down to a dremmel to finish the grind. Finished with 800 and 2000 wet dry sandpaper.
USAF_Vet
Member
Nice! Always liked bullpups. I just wish I could afford one that was southpaw friendly.
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