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SU-76M Successor Requirements

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"Tactical-technical requirements for the design of experimental light SPGs with a rear fighting compartment

A. Main requirements
  1. Type of SPG: tracked, rear fighting compartment
  2. Weight: no more than 25 tons
  3. Crew: 4
  4. Dimensions:
    1. Width: 3000 mm
    2. Height: 2300 mm
    3. Clearance: minimum 450 mm
  5. Protection:
    1. Front armour of the hull, front armour of the casemate, sides of the casemate, and sides of the fighting compartment must be impenetrable to 88 mm guns with a muzzle velocity of 1000 m/s.
    2. Lower side armour of the hull, rear armour of the hull, and rear armour of the fighting compartment must be impenetrable to shells of this gun from ranges over 1000 m.
    3. Roof of the hull and fighting compartment: 30 mm
    4. Floor in the front: 30 mm
    5. Floor in the rear: 20 mm
    6. Protect the SPG from HEAT rounds and grenades
  6. Armament:
    1. Cannon: 85 mm with a muzzle velocity of 900 m/s
    2. 2 coaxial belt-fed machineguns
    3. 2 intermediate machineguns, stowed
    4. 1 flare gun, stowed"
Via Yuri Pasholok.

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