A relatively new assault rifle that has quickly found admirers around the world, despite lacking a "trendy" design. Weapons of this series are one of the best in their class, renowned for their reliability, accuracy and ease of use. Despite being relatively difficult to obtain in the Zone, this assault rifle is often ordered by experienced stalkers at considerable expense. - Call of Pripyat in-game description
The main drawback of the SGI-5k that it can't mount a SUSAT scope, but in almost every other aspect it wins with other assault weapons - it is very accurate (as good as the TRs-301 and the GP37), it has a shorter reload time than other NATO weapons and is one of the most (if not the most) durable non-unique weapon in game - the SGI is still enough accurate and doesn't jam as frequently as other rifles even if its condition goes past 70%. It can also mount an M203 grenade launcher, which makes it even better as a close-combat rifle. It is, however, a pretty heavy weapon, weighing a hefty 4 kg when empty.
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 is purchasable from Skinflint after getting a friendly reputation with the Freedom faction.
The player can also obtain an SGI in the Army 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.
Two SGI 5ks can be found inside the Bloodsucker Village being held by two dead Freedom stalkers.
Within the game's code, there are leftovers of another version of the SGi 5k, which was supposed to have lowered weight (2.2 kg empty), but couldn't mount a grenade launcher.
The SGI must be upgraded to mount both an underbarrel grenade launcher and a SUSAT Scope. Its upgrades are the same as all 5.56mm caliber assault rifles. It performs particularly well for any role it is upgraded to, however for no apparent reason the player's turning speed is slightly, but noticeably reduced, making it quite hard to use, especially in heat firefight, but it works well as a marksman weapon.
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.
Can be purchased from Ashot after joining the Freedom faction.
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.
Call of Pripyat
In Call of Pripyat, the SGi is fully optimized as an assault weapon. It lost its 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.
With upgrades, the fire rate and the recoil can be heavily improved, making the weapon very powerful at short range and even at medium range, if one gets used to the weapon's iron sights.
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. Radiation suit-clad Monolith stalkers also use the weapon.
One can be found in a stash in the outer western area of the Jupiter factory's warehouses behind a red shack (one will get coordinates for it after helping Uncle Yar deal with the mercenaries at Kopachi Village).