S&t m3a1

Discussion in 'Electric Guns' started by JNG518, Jul 12, 2015.

  1. JNG518

    JNG518 New Member

    Hudson Falls
    I have a some questions about this SMG. Has anyone done
    any upgrading of the battery space in the hand-guard.
    I want to replace the 2/3aa battery with a 2/3a battery.
    any help is welcomed.