XCR short gas vs long gas system?

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Steiner

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I noticed on Wolverine's site that the XCR will be available in a 18.6" standard barrel with short gas system and the 18.6" heavy barrel w/long gas system. Could someone explain the difference between short and long gas systems? Any pro's or con's to either? Thanks.
 
This is speculation, take it with a grain of salt. I believe the short gas system is similar to that in the sks. A short stroke piston slaps the bolt carrier to the rear. Piston only travels an inch or two, bolt carrier assembley the whole way. I'm not sure which long stroke system they use. The AKs have the piston as part of the carrier and as such stroke the whole length, traveling fore and aft with the bolt. Fals have a seperate piston with its own spring, but still travel the full stroke. Anyone feel free to add or correct this.:)
 
Personally I think the long system is the way to go. I'm already saving for an XCR and definetly want to keep it non-restricted. With the 18.6" barrel I think it's going to look way better than if it had the short. I think someone posted an example pic of what the 18.6" w/ short system would look like and it was pretty horrid.
 
Darren Constable said:
This is speculation, take it with a grain of salt. I believe the short gas system is similar to that in the sks. A short stroke piston slaps the bolt carrier to the rear. Piston only travels an inch or two, bolt carrier assembley the whole way. I'm not sure which long stroke system they use. The AKs have the piston as part of the carrier and as such stroke the whole length, traveling fore and aft with the bolt. Fals have a seperate piston with its own spring, but still travel the full stroke. Anyone feel free to add or correct this.:)
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Both systems on the XCR are short stroke. The short and long gas system are merely a short or long piston. Short gas system lets you use short barrels. Long gas system looks better with a long barrel.
 
armedsask, basically summed that up. If you want to put a shorter barrel on it than get the short system. By they way are these being sold in canada yet? What year is it? I thought these were supposed to be out last year.
 
They are not here yet and don't ask when.

They haven't even shipped in the states. I used to have a hard on for the XCR, seemed to be everything I wanted in a rifle. I've since grown tired of the teasing.
 
I like both the FS2000 and the Robinson. We'll see which one becomes available first. I've already set aside funds, but don't want to go much over the $2100 mark. I would love a .308 XCR if that ever happens.
 
Armedsask said:
Both systems on the XCR are short stroke. The short and long gas system are merely a short or long piston. Short gas system lets you use short barrels. Long gas system looks better with a long barrel.
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Are you sure that they are short stroke? the one I took apart had the piston attached to the bolt carrier. It is not impossible, but it is impractical to make an easy to change bbl with a seperate piston. Don't mistake the bbl with a quick change. Anything that uses an Allen bolt is not quick change.

Here is what the horse has to say on its rifle.

Comments
The XCR's system is what we are calling a "Kalashnikov Theory" system. What we mean by this is that it uses a piston to drive the bolt carrier and has a heavy duty bolt, heavy duty extractor, solid knock out ejector. If you look at the parts, you will notice some AK characteristics. Unfortunately, we could not use AK parts and have the quick change barrel system which does not require headspacing. Nor could we add all the rail systems and ergonomics and keep the weight where it needs to be for the specifications required by the Special Forces. (We've kept pictures of these features off the web until we got closer to shipping for competetive reasons.)

Most of the new rifles designed by FN and H&K have used a Stoner bolt (small, mult-lugged) bolt. We do not feel that the Stoner bolt has the durability or reliability that the Kalashnikov bolt does. Our test have shown that even if you get the Stoner bolt to last, it still is much easier to jam with sand, etc. Also, the extractor and ejection systems are not as good.

So who was the better designer: Stoner or Kalashnikov. We vote for Kalashnikov for the most reliable and durable design. Stoner has some great contributions also which are: good magazine and safety selector ergonomics, and the use of new lightweight materials such as aircraft aluminum and composites for the stocks and handguard.

In developing the XCR we found the AK-47's action very difficult to beat. Kalashnikov is arguably the greatest military firearms inventor next to Jonathan Moses Browining. Not only is the AK a great weapon but Kalashnikov's PK belt-fed is one of the best machine guns ever.
 
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