need help on upgrading my Thompson AEG

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Boxboy360
Pawn
Posts: 1
Joined: Tue Mar 31, 2015 3:55 pm

need help on upgrading my Thompson AEG

Postby Boxboy360 » Tue Mar 31, 2015 4:22 pm

So I have a (Thompson) Thompson M1A1 Military with 325 fps (what box says) and I wanted to upgrade the speed and still have the same amount of fps. And also could I just use a 9.6v battery instead of the 8.4v that came with it?

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