OTs-01 and OTs-01S Kobalt revolvers 9mm
The 9 mm OTs-01 and OTs-01S Kobalt revolvers are developments of the RSA revolver and have replaced that model in production. The design of the RSA 9 mm revolver has been credited to Igor Stechkin and Boris Avramov, hence Revolver Stechkina-Aramova - RSA. Development of the RSA commenced during 1991 to meet a requirement for a standard service revolver for the Russian Federation Interior Ministry; development was completed during 1992. The OTs-01 is chambered for the 9 × 18 mm Makarov (57-N-181S) cartridge while the OTs-01S is chambered for 9 x 17 mm Short (0.380 ACP). Rounds are fed into the swing-out cylinder in two clips, each holding three rounds. The rounds are located in the clips so that they load into alternate chambers. The two clips are therefore located with one clip placed over the clip already loaded. One unusual feature is a safety catch on the left of the revolver. Actuating the safety, locks the external hammer and cylinder rotation. Service life is given as at least 3,000 rounds. Various butt grip configurations are available. Specifications Cartridge: 9 × 18 mm Makarov (57-N-181S) or 9 × 17 mm Short (0.380 ACP) Operation: double- or single-action revolver Feed: 6-round cylinder Weight: empty, 800 g; 3-round clip, 65 g Length: 200 mm Height: 130 mm Width: 40 mm Barrel: 75 mm Sights: fore, fixed blade; rear, notch Muzzle velocity: OTs-01, 300 to 320 m/s Manufacturer KBP Instrument Design Bureau Tula 300001, Russia. Agency Rosoboronexport Federal State Unitary Enterprise 21 Gogolevsky Boulevard, 119865 Moscow. Status In service with the Russian Federation Interior Ministry. Offered for export sales. Similar model KAZAKHSTAN Manufacturer Kaspex Type: TKB Kobalt Remarks: Standard specifications.
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