View source for S-401

{{Infobox_weapon
 | name = S-401
 | alt_name = Sokol model 401
 | image = S-401.jpg
 | type = Light Machine Gun
 | origin = [[Saratov]]
 | in_service = 1557-present
 | used_by = [[Saratov]]
 | wars = N/A
 | designer = [[Sokol Armaments]]
 | designed = 1550
 | manufacturer = [[Sokol Armaments]]
 | produced = 1555-present
 | variants = N/A
 | weight = 7.40 kg (16.31 lb) 
 | length = 1,020 mm (40 in) stock extended / 890 mm (35.0 in) stock folded (standard version)
 | barrel_length = 460 mm (18.1 in) (standard version)
 | barrel_diameter = 
 | caliber = 
 | cartridge = 7.62x51
 | action = Gas operated, rotating bolt
 | rate_of_fire = 1000 rounds/min
 | muzzle_velocity = 915 m/s (3,002 ft/s) (standard version)
 | effective_firing_range = 300–1000 m sight adjustments (standard version)
 | maximum_firing_range =
 | feed_system = 150-round M27 ammunition belt or 35-round box magazine
}}