The Central Design and Research Bureau of Sporting and Hunting Arms, abbreviated TsKIB SOO (Russian: ЦКИБ СОО) is a Russian small arms design bureau based in Tula, Russia. It was established in 1946, and it is currently managed as a branch of the KBP Instrument Design Bureau.^[1]

Notable products designed at TsKIB SOO include:

• high-quality custom hunting shotguns (MTs 5, MTs 6, MTs 7, MTs 8, MTs 30, MTs 109, MTs 110, MTs 111, MTs255, etc.)
• TKB-022PM, TKB-0146, TKB-408, TKB-517 assault rifle prototypes
• OTs-38 Stechkin silent revolver
• OTs-12 Tiss assault rifle
• OTs-14 Groza assault rifle
• OTs-28 23mm shotgun^[2](ru:ОЦ-28)
• ASh-12.7 12.7 mm battle rifle
• OSV-96 12.7 mm sniper rifle
• 12.7mm NSV machine gun and Afanasev A-12.7 machine gun
• 40mm GP-25/GP-30/GP-34 and RG-6 grenade launchers
• AGS-40 Balkan 40 mm automatic grenade launcher
• Afanasev Makarov AM-23 aircraft cannon
• "Rys" ("Lynx") series of shotguns