Manufactured by Swiss Arms AG., the SGi-5k is the weapon of choice for veteran and expert Freedom stalkers in the zone. In all games, the SGI one of the most durable, powerful and accurate assault rifles in the game and a jack-of-all-trades type of assault rifle, although heavier than most with it weighing at 4.1kg (empty) and around 4.3kg (fully loaded). The weapon uses 5.56mm rounds.
While this rifle is one of the most durable and accurate assault rifles available, it cannot mount a SUSAT Scope, but can mount an underbarrel M203 Grenade Launcher. It is also the second heaviest rifle in the game, weighing in at 4.00 kg unloaded.
The SGI 5k is commonly used by veteran-ranked members of the Freedom faction, and is also often used by expert-rank Freedom members as well. The SGi-5k is also used by several veteran and expert Mercenaries. Finally, several of the veteran-ranked soldiers of Monolith are armed with an SGI 5k during the final battle atop the Chernobyl NPP's superstructure.
It's purchasable from Skinflint after getting a friendly reputation with Freedom faction.
The player can also obtain an SGI in the Military Warehouses area from the veteran Freedom squad leader that will be ambushed by Skull's company upon entering the area Although the chances of finding it in good condition is somewhat rare.
There is a unique variant of the weapon: the Sniper SGi 5k which has an integral SUSAT-scope attached to it with an improved 4.0x zoom. You can find two of this variant on the guards at the entrance of the Freedom Base in the Military Warehouses area. It can also still mount an underbarrel grenade launcher like the stock variant.
The SGI must be upgraded to mount both an underbarrel grenade launcher and SUSAT Scope. It's upgrades are the same as all 5.56mm caliber assault rifles. It performs particularly well for any role it is upgraded to.
As for the members of Freedom faction, only the experts use this gun. Some experienced Monolith troops around Limansk and certain Mercenaries carry this weapon.
The SGi 5k is more available. It can only be purchased from Freedom after joining them.
A free SGi 5k upgraded to mount a SUSAT scope is given to the player for free upon joining Freedom.
There are a few SGI 5ks found in stashes in the Army Warehouses, one is in a stump where the coordinates are from an unknown stalker and Hog can also provide the location of one in the actual Military base for around 3000 rubles, which is located in the attic of a barracks structure.
In Call of Pripyat, the SGi is fully optimized as an assault weapon, it lost it's ability to mount a SUSAT scope and so isn't the best weapon for picking off distant targets but it can mount an M203 grenade launcher without any modifications. At stock configuration, the SGi has great damage, accuracy, average recoil and above-average durability. The weapon's performance at close range is exceptional, especially when fully modified for maximum firing rate and low recoil, however it is still hampered by the fact that it's a dedicated assault weapon, distant enemies are still a problem if one cannot use the iron sights properly.
A custom variant known as Strelok's SGI 5k can be found in the last stash of Strelok's Group in Yanov. This particular variant virtually eliminates the stock variant's shortcomings as it can mount all accessories without modifications and the increased damage, dealing more damage than any other NATO weapon in stock.
The weapon of choice of veteran Freedom members, as well as Mercenary units – nearly every squad of these factions will have at least one in the squad. Loners may carry this weapon, especially in the Yanov and Pripyat areas.
1 can be found in a stash in the outer western area of the Jupiter factory's warehoues behind a red shack.
Strelok's SGI 5k can also be found in a series of caches scattered over Yanov – the coordinates are found in the UAV. It is always found in the last stash coordinate.