I have been thinking about trying to convert an sks into 7.62x25 by using a ppsh43 barrel and welding an extention onto it to make it 16 inches. I was thinking about eliminating the gas system since the ppsh43 is just a blowback operated system.
Why does the sks need to be gas operated when the bolt looks so much like the blowback operated bolts? Why couldn't it just be blowback operated?
2007-10-24 08:50:45 · 8 answers · asked by mikeytrav 1 in Sports ➔ Outdoor Recreation ➔ Hunting
The SKS is gas operated because the 7.62x39mm Soviet cartridge is too powerful to use in a light blowback operated rifle.
Blowback designs are used only for low pressure, relatively low power cartridges. A blowback rifle designed for a rifle cartridge would probably weight over 15 pounds and have a terribly stiff recoil spring.
Legal problems aside, I don't think it would be cost effective to convert your SKS to a blowback pistol caliber carbine.
Doc
2007-10-24 16:34:01 · answer #1 · answered by Doc Hudson 7 · 0⤊ 0⤋
With the dimension differences between the 7,62x39 and the 7,62x25 (.30 Mauser), there is no way this conversion can be accomplished, as the magazine well of the SKS can't be resized for the smaller 'pistol' class cartridge, besides the fact it would require a completely remachined, brand new bolt, which would probably cost more than the SKS itself.
2007-10-24 22:53:35 · answer #2 · answered by Grizzly II 6 · 3⤊ 0⤋
the sks is gas operated because thats what operates the ejection/loading operation. w/out that it would be a bolt operated mechanism. as for modifying to pistol round why? its to old . get a ar/15 model and modify to 9mm. its more available .practical. and probably more legal. an sks is a assault rifle.in cali and has to have at least 9 original parts. modifying may make it a felony. why bother. but just my opinion.
2007-10-24 13:00:22 · answer #3 · answered by charlesmartinez151 3 · 2⤊ 1⤋
Recoil operated systems are used on lower pressure cartridges, like handgun loads. The slide and action need to be heavier with larger cartridges.
2007-10-24 15:18:56 · answer #4 · answered by James D 4 · 0⤊ 0⤋
While it's not outright illegal to do what you're planning on doing, you're going to have to replace a number of parts with U.S. manufactured parts in order to comply with BATF 922r for foreign manufactured weapons. I've never heard of anyone getting busted on that, I think it's just to add time to any other firearms offense.
The problem here is, if you can get the PPSh barrel lined up, is that the Tokarev casing is too skinny to use the bolt that's in your SKS already, and you're going to have to make your own magazines in order to fire it. However, converting your SKS to recoil blowback is as simple as getting a larger recoil spring, welding the bolt to prevent it from rotating and locking, and removing the gas system.
2007-10-24 09:25:22 · answer #5 · answered by fishtrembleatmyname 5 · 0⤊ 7⤋
7.62x25 Conversion
2016-11-04 02:39:44 · answer #6 · answered by ? 4 · 0⤊ 0⤋
I don't know to much on the SKS's gas system in particular, but let me give you a hint:
Check your local laws before changing you're barrel length. I think 16 might be a little too short, but I don't know what your state's laws are.
Good luck with the project though, it would be an interesting firearm to plink with.
2007-10-24 09:05:41 · answer #7 · answered by flucolax35 3 · 1⤊ 7⤋
Unless you have a Firearms Manufactuers licence from BATF, what you are planning on doing is ILLEGAL and a Federal offense........
2007-10-24 09:12:34 · answer #8 · answered by JD 7 · 2⤊ 10⤋