Sig Sauer SIG556xi Russian 7.62x39 Semi-Auto Rifle - 16 in Threaded Barrel, Folding/Telescoping Stock, KeyMod Handguard
This SIG556xi Russian stands out for its 7.62x39 chambering with AK-pattern magazine configuration, a serialized upper receiver, and a USA build. It combines the SIG adjustable gas-piston system with a 16-inch threaded barrel, a free-float aluminum KeyMod handguard, and a continuous 1913 Picatinny top rail. Factory flip-up iron sights and a knurled vertical foregrip are installed.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling marks from prior use are present. See the photos for close-ups.
What's Included
- 3x 30-round AK-pattern Magpul PMAG polymer magazines
- Flip-up front and rear iron sights (installed)
- Knurled vertical foregrip (installed)
The Russian submodel configures the SIG556xi for 7.62x39 with AK-pattern magazines, delivering a proven caliber in a modern, modular platform. The upper receiver is serialized, and the rifle is made in the USA.
Its operating system is a semi-automatic, adjustable gas-piston with a rotating bolt and an adjustable gas regulator. This setup is designed for consistent cycling and easy tuning.
The 16-inch barrel is threaded and fitted with an open-prong flash hider. A continuous 1913 Picatinny top rail runs the length of the receiver and handguard.
Furniture includes a side-folding, telescoping polymer stock that folds to the right and a free-float aluminum KeyMod handguard. Installed flip-up iron sights and the knurled vertical foregrip provide ready-to-use sighting and front-end control. Controls include a rotary manual safety selector. Capacity is 30+1.