spring for AEG SP 110 [Guarder]

Spring for AEG SP 110

Spring SP 110 Guarder with an uneven pitch AEG tuning.
Both are polished face.
Compatible with AEG Facilities, except PSG-1.
Equivalent to 110 Systema.
Installation of the spring provides power outlet between 360 up to 390fps (muzzle velocity is dependent on other parts mounted in the interior of the gearbox)