↑ 625: Leningrad Experimental Shipyard of the VTsSPS Abalakov Triangle

• 111x63 mm., 153 g.
• Gate Opening: 20 mm., Clearance: 20 mm.
• -
  [illegible] MIL
• Produced in the 1960s and 1970s at the Leningrad Experimental Shipyard of the VTSPS, Leningrad

↑ 626: Leningrad Experimental Shipyard of the VTsSPS Abalakov Triangle

• 116x67 mm., 161 g.
• Gate Opening: 21 mm., Clearance: 21 mm.
• -
  C
• Produced in the 1960s and 1970s at the Leningrad Experimental Shipyard of the VTSPS, Leningrad

↑ 627: Leningrad Experimental Shipyard of the VTsSPS Abalakov Triangle

• 113x62 mm., 148 g.
• Gate Opening: 17 mm., Clearance: 17 mm.
• [ No markings ]
• Produced in the 1960s and 1970s at the Leningrad Experimental Shipyard of the VTSPS, Leningrad

↑ 624: Leningrad Experimental Shipyard of the VTsSPS Вов

• 116x63 mm., 161 g.
• Gate Opening: 20 mm., Clearance: 20 mm.
• 19-78
  -
• Made in December 1978 at the Leningrad Experimental Shipyard of the VTsSPS, Leningrad

↑ 631: Leningrad Experimental Shipyard of the VTsSPS Ural

• 110x56 mm., 140 g.
• Gate Opening: 15 mm., Clearance: 15 mm.
• 2666ОТК3-89
• Made in March 1989 at the Leningrad Experimental Shipyard of the VTSPS, Leningrad