Home -> Firearms -> Assault Rifles -> SG-550

DESIGN
Developed by SIG for the Swiss army rifle contest in 1979. The SG-550 is based upon previous designs by SIG, the 540 and 541. The firing mechanism is quite similar to the AK-47. It has the same successful diopter sights as Heckler & Koch weapons. A 0-1-F trigger group is standard, although a three round burst group can also be added. SG stands for ‘Sturmgewehr’, meaning ‘assault rifle’.

VARIANTS

SG-552 Commando
The SG-552 Commando was developed for the commandos and anti terrorist teams. Because of the short barrel and gas piston, the SG-552 Commando does not use the same firing mechanism. The different mechanism allows a higher rate of fire, making it more effective at short ranges. Together with the G36C it outperforms the AK-74SU and HK 53.


SG-551 SWAT
Also known as SG-551-1P. This rifle is similar to the SG-551. The difference is that it comes standard with a scope and cheekpiece.


SG-551
The SG-551 is the carbine version of the SG-550. It has a shorter barrel and handguard. It can still be equipped with a under barrel grenade launcher. It can not fire rifle grenades and it is not possible to fit a bayonet.


SG-550
The standard assault rifle. It can be fitted with a under barrel grenade launcher and a bayonet. Standard NATO rifle grenades can be fired. When fitted with a scope and cheekpiece it is called SG-550 SP.


SG-550 Sniper
Also known as SSG-550. The Swiss like sniping with assault rifles. Hence, even the SG-552 is often seen with cheekpiece and scope. This is the perfect solution. An accurate sniper rifle based upon the SG-550. It’s low calibre allows for quick follow-up shots and the bullets high speed makes it easier to hit moving targets. A bipod is standard. Critics say its damage is too low. Just shoot twice.

PERFORMANCE
The SG-550 and SG-551 are very accurate because of their long barrels. It is one of the first rifles to use a lot of plastics. All weapons are fitted with STANAG quick-detach scope mounts and their precision fit ensures zero-retention, even after repeated mountings. All weapons are ambidextrous and have a folding stock.

The weapon is very reliable and the firing mechanism of the AK-47 ensures that it will fire under harsh conditions. Reliability is further improved by non-jamming, translucent magazines, which allow you to see how much ammunition you have left. The magazines can easily be clamped together without extra tools. These features are adapted by the G36.

USE
- Used by the Swiss Army. It is called Stgw. 90 by the Swiss Army. ‘Stgw.’is a abbreviation for ‘Sturmgewehr’ which means ‘assault rifle’
- Swiss and German special police teams use SG-552, SG-551 and SG-550 Sniper.