Talk:SIG 550

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[edit] Leftovers from assault rifle

Feel free to merge this surplus material:

The SIG 550 was adopted by the Swiss Army. Comparable in size to a M16A2, it uses 20-round magazines. It has been adopted in modified form (SIG 551) by US Federal agencies because of its reliability and accuracy. The SIG 550P is the sporting variant but only has the semi-automatic mode of fire; it is mainly used in Swiss 300 meter precision contests and over 100,000 are in Swiss private ownership. The 550P is one of few assault rifles made in vivid colors like red, blue and yellow, but grey remains the standard color. For commando use a compact SIG 552 version also exists.

Dan100 12:22, Feb 20, 2005 (UTC)

Doesn't the M16A1-4, M4 all use the 30 round STANAG? Unless you're just using that as a given.

The SIG 550 also accepts 30-round detachable magazines, and contrary to recurring and persistent errors on the part of certain individuals who have no idea of how firearms actually work, is chambered not in 5.6 mm but in 5.56 mm. The manufacturer's branded Web site[1] makes this abundantly clear.

The site failed to load for me so I cannot comment on its content. I can state with relative confidence thought that the weapon uses GP 90 5.6 mm ammunition. However, the weapon is chambered for 5.56 mm ammunition. My complete contradiction can be explained in that the GP 90 5.6 mm is 5.56 mm ammunition in every regard except for the length and weight of the bullet. The SIG 550 uses a higher rate of twist then other NATO weapons of the same caliber so while it can fire other 5.56 ammo, the GP 90 is specially made to excell in the weapon. That the number has changed is meaningless, .22lr ammo is not exactly .22 of an inch, .223 remington is not exactly .223 of an inch. As such 5.6 is the same size as 5.56 simply rounded to one less degree of accuracy. Another example of this is the original M16 chambered the 5.56 mm M193/M196 round designed for the 1:12 twist. New M16s (1:7 twist) do not as effectively load that round, though they can safely fire them in the same manner that the SIG could chamber them or the current M855/M856. To sum up, same round, differnet name, the SIG fires a 5.6 mm round.Pissedpat 01:10, 23 September 2006 (UTC)

We were taught in military (oral and in writing) that the lenght of the StGw90 is exactly 1 meter, however other ressources on the web put it at 998mm. Can anyone comment on that?

• Yes. But the grip is slightly different between the military and "civilian/export" versions. The military one is exactly 1000 mm (unfolded, 772 mm folded).CyrilleDunant 15:40, 30 October 2005 (UTC)

Aren't these all known as "SG550", not simply "550" (or SG551, etc)? Also, as far as I know the sniper version is called the SSG 550, as in Scharfschutzegewehr, like all other SIG sniping weapons.

Question: What is the action of this rifle, does it fire from an open or closed bolt? I have tried looking at the provided photos as well as others on line of the weapon stripped, but I cannot tell if the lower reciever houses a hammer mechanism or simply a sear. I also have been unable to detect if the bolt carrier has an open rear or bottom for the hammer to strike the firing pin. If no one knows for sure, I will ask a guy I am going to school that has served in the swiss reserves and possesses one. I'm sure he knows about the action.Pissedpat 01:10, 23 September 2006 (UTC)

[edit] HK G36 mag compatability?

Does anyone know if the mags from the SIG 550 is the same as the one used by the Germans and its customers in the G36 rifles?

[edit] pop culture

I have removed this section as it does not really belong in Wikipedia (see what wikipedia is not: WP:NOT, specifically "list of trivia"). These reference can be added to the two list articles mentioned. --Deon Steyn 06:38, 10 August 2006 (UTC)