Swiss Arms question

bladerogers

bladerogers

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I have a classic green that throws 62 grains with amazing accuracy, but I reload and really hate how this thing beats up brass. so I have a few questions. First, can the gas port be closed and if so, how? and second, is it a problem or will it cause issues to shoot these regularly with closed gas port? Thanks!
 
OK, so I can see that if I turn the gas valve to in between position A(single port) and B(double port) that should shut off the gas supply...though not sure how long it will stay in that postion as there is no locking mechanism. Was hoping I could twist 180, but no lock there neither. I guess these weren't made for grenade launching :) so I can sort that out, but do any of you foresee any issues arising shooting these with gas off, straight pull type action?
 
You can put a strip of velcro behind the ejection port and that will help with the brass. I would not mess with the gas port, the rifle is not designed to fire without it.
It will launch rifle grenades (hence the steel ring on the barrel). The grenades are fired using live rounds and have a bullet trap.
 
Don't worry about the dings in the casings, you can reload them several times without any issues at all. They all are brass eaters. You should get 6-10 reloads without too much issue, you will however lose more than typical, as the mouths at times get wrecked when resizing. One thing you will want to watch for is the resizing pins, if not well lubed and 100% centered, they will break on you. Not expensive, buy a pain having to mess with. I wouldn't mess with the piston settings unless you want a single shot, then by all means do as you please ( won't be giving out any recommendations here, for obvious reasons)
 
Hmm, now I am going to have to check. If I recall properly I was shooting my SA just a few days ago after a cleaning and I had installed the gas plug upside down. Fired fine but no ejection. I am fairly certain however that that the gas plug did lock in place in the upside down position. I will check it tonight.
 
That's why I ask, but I am not sure how it would even possibly cause any issues. I mean, I could see under heavy sustained fire hot gases melting a hand gaurd, but that's it. So the reason I asked was for feedback on concerns. AR180Shooter, if your post is opinion based only, than it is of little value to me. However, IF there is validity to it, then you likely know that nobody in their right mind would want to risk damaging the rifle to save a few brass. That is precisely why I asked the question, because I want to know if there is any possibility in damaging the rifle, because I really have my doubts. I'll probably craft a brass catcher though, need one for the Tavor as well anyhow.
 
bladerogers said:
That's why I ask, but I am not sure how it would even possibly cause any issues. I mean, I could see under heavy sustained fire hot gases melting a hand gaurd, but that's it. So the reason I asked was for feedback on concerns. AR180Shooter, if your post is opinion based only, than it is of little value to me. However, IF there is validity to it, then you likely know that nobody in their right mind would want to risk damaging the rifle to save a few brass. That is precisely why I asked the question, because I want to know if there is any possibility in damaging the rifle, because I really have my doubts. I'll probably craft a brass catcher though, need one for the Tavor as well anyhow.
Click to expand...

Opinion, based on the fact that the rifle was not designed to fire continuously with a blocked off gas port. Likely I'm being overly cautious. It is a robust design that should be next to impossible to damage unless you really abuse it, but I prefer to err on the side of caution when it comes to these things.
 
Swiss Arms has a replacement gas plug that has a third position (Closed, fire and adverse). It's a POR item, and obviously special order only.

DO NOT swivel the gas plug 180 degrees so the holes are 'up' and off the barrel. It has no way to retain itself, will walk over and will end up shooting down range at an incredible velocity.
 
bladerogers said:
J996, according to a SIG 550 manual I stumbled across, the gas port has a third setting on those rifles to close it, specifically for grenade launching.
Click to expand...

Rifle Grenades.

You are mistaken. The old Stgw57, when firing the old Gewehrgranate 58 used a special magazine with Treibpatronen (no bullet) to launch them.

The Stgw90/SIG550 however, uses normal ammunition to launch rifle grenades attached via the 20mm ring on the barrel.

This is what it says in one of my manuals:

"Das SG 550 ist standardmäßig für den Verschuß von Gewehrgranaten vorgesehen. Diese werden durch Drehbewegungen auf den Lauf aufgesteckt und mit normaler Gewehrmunition verschoßen. Die Geschosse werden dabei innerhalb der Granate aufgefangen. "

In short it says the grenades are launched with normal rifle ammunition (GP90) and the bullet is captured inside the grenade (bullet trap).

Gas Settings

There is no third gas setting. I own a PE and there are only 2, normal and adverse. I have fired a Swiss military Stgw90 and it does not have 3 gas settings either, it has 2.

If you can put the gas plug in backwards or get it to stay between the two settings to make it work, its your rifle. However this is not a recommended practice.
If you are concerned about using the rifle in this way, you should email Swiss Arms about it.

Edit: Thanks TSE for the info on the special order gas plug, was not aware of that.
 
Just checked the manual again J996, you're correct, I am mistaken. I must have read it on some bunk wiki or forum page. TSE justin, that's a cause for concern, thanks for pointing it out, and thanks for the info. I'll contact Swiss Arms via email and see how I can get one of these.

canadianshooter, I am asking them the same question as well. I'll post back in this thread with their response. Thanks all!
 
You can always source one of the case deflectors (or make one like I did). They tend to adjust the ejection enough to mitigate most of the mangling of brass.
 
Right beltfed, but then there's still that problem of brass getting chucked away. I prefer to spend my time blowing up gophers over trying to catch glimpse of brass shining catching sun rays :) I'll likely still go with a brass catcher, but this option would be nice to have as well.
 
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