Swiss arms / SAN rifles FAQ

Steve Janes said:
I agree it does not affect performance, but for me the wiggle between the upper and lower was annoying as hell, and then I found this on the Swiss Rifles Message Board http://theswissriflesdotcommessageboard.yuku.com/topic/8847/PE90-looseness

In the thread, the looseness between the upper and lower are discussed, as I said I couldn't stand how loose mine felt so I tried what this guy suggested in post #3, "The only other thing you can do is carefully bending the front fork part of the lower a little closer."(Guisan) I did this and My upper and lower are now very tight, I had to push a bit to get the holes to line up. There is no looseness or wiggle at all anymore. When I did this, I wrapped the fork part of the lower in a towel so as to not scratch the hell out of it, and then (I cannot stress this enough) "CAREFULLY" bent them ever so slightly tighter together with a pair of vise grips. It worked beautifully.

No more annoying wiggle!

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Edited to avoid the pointless further argument.
You try to give credible info, from a credible source and you get all these "experts" chiming in to tell you that from what they have read, the manufacturer is incorrect about there own product. It creates for a situation where no one out there knows the truth because there is so much contradictory information.
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Another interesting tid bit, I recently wrote to Swiss Arms and asked them to clarify some things for me, I asked for Swiss Arms "official" statement about the 550/Black Special being fired under water, and being fired after fully submerging it.

I received this in response

Watertest.jpg
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I think you can use shim instead of bending your lower.
I actually trying to reduce the wiggle. l replace the original pin (7.95mm) with 7.98mm. It can eliminate at least 50%. The better size for mine is 7.99mm, which eliminate 90 %of wiggle, especially up and down. But I did not put shim yet and I think it can get much less with the shim on. The pin may not be one piece. Mine is like the front pin of a Colt Sporter, which is a pin and a screw. You may find the one you like by searching "MISUMI USA"
 
MUGEN said:
I think you can use shim instead of bending your lower.
I actually trying to reduce the wiggle. l replace the original pin (7.95mm) with 7.98mm. It can eliminate at least 50%. The better size for mine is 7.99mm, which eliminate 90 %of wiggle, especially up and down. But I did not put shim yet and I think it can get much less with the shim on. The pin may not be one piece. Mine is like the front pin of a Colt Sporter, which is a pin and a screw. You may find the one you like by searching "MISUMI USA"
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There's a thread on tightening the Swiss Arms Upper and Lower, I'm sure a larger pin would help, but numerous people have had success with this method as well, and it's free!;)
 
Does all flat top CQB use 553 gas system? I find a flat top CQB in Wolverine but they do not know whether it is using the 553 system. Any hint? Thanks.
 
proflui said:
Does all flat top CQB use 553 gas system? I find a flat top CQB in Wolverine but they do not know whether it is using the 553 system. Any hint? Thanks.
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or even easier, have a look at the charging handle, (if its the flat rubber eneded sg550/full length classic green one it's a 553, if its the all metal round ended one it's a 552 gas system.)
 
Not sure if this has been asked, I couldn't find any answers in a brief search however... if they start to bring over .308 models, could the upper and barrel be switched out from a .223? I think this would be a really sweet deer rifle, but I don't think I would personally be comfortable hunting with a .223. Just curious, kind of a little out of my price range anyways lol
 
ianfroese said:
Not sure if this has been asked, I couldn't find any answers in a brief search however... if they start to bring over .308 models, could the upper and barrel be switched out from a .223? I think this would be a really sweet deer rifle, but I don't think I would personally be comfortable hunting with a .223. Just curious, kind of a little out of my price range anyways lol
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Not a chance. Magwell chief amongst other reasons. It was discussed in this very thread around post 123.
 
J996 said:
Lets put this one to bed once and for all.
There exists the SIG550 and The PE90. We all have the PE90 regardless of what color it is. And there is most certainly a difference in the steel structures of both lower and upper receivers between the two rifles.

Spend some time and study the dimensions and features of the lower and upper receivers and you will see the differences between them. Here are some noticeable ones.

PE90 top, SIG 550 bottom.

On the 550 lower there is a hump on the outside right to accomodate its trigger group. This is part of the stamping. The PE90 does not have this feature.

550vs90.jpg


SIG 550 on left PE90 on right.

Left upper: On left lower side of bolt carrier there is a small shiny tab attached to the receiver. The upper on the right does not have it. Compare those two areas of the receiver, they are different.

550vs902.jpg


All our SA's are stamped PE90 which is a purpose designed SEMI ONLY SPORT VERSION that will not accept the FA parts of the 550.

PE stands for Präzision Einzelfeuer (Precision Singlefire).

Yes the barrels, gas systems and furniture are the same but the receivers are different.

What is the point in trying to prove we have prohibs in our gunsafes with these re-occouring "its a 550" discussions? What do we gain from this?
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Thank you for this post.
 
DWDMOWAT said:
Swiss military 550 is a non-restriced right? Found a few here in Germany for sale for 350 euros each. Thinking about bring some back.
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Only if it's the PE90. If it's a 550, or variant, you want be able to import it for civilian sale. They look the same cosmetically, but the PE90 internals are different, and incapable of full auto fire. All the ones you see in civilian hands in Canada, and on the CGN boards for sale, are PE90's.
 
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