F1 long shaft motor.
HIGH TORQUE model gen.2 (ALU VERSION).
Conditions improved rotation speed.
Duration of stress and to damage improved.
Generation 2 is more efficient for the less energy used.
Recommended for springs up to M170.
Better durability with ball bearings on both ends.
Long shaft version compatible with the following replicas:
- M16 / M4.
- MP5 (except for MP5K and MP5PDW).
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