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Old July 21st, 2017, 19:43   #5
Stormblitz
 
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Join Date: Jun 2012
Location: Vancouver, BC
The gearbox will not fit without heavy modification. I fitted my gearbox into a King Arms M4 metal body because of the trades.

I had to grind off several parts on the gearbox and modify part of the upper to fit the spring release lever. I also completely removed the blowback system because it wouldn't work with the upper, and also because I didn't want that feature. All I wanted was the forward assist knob spring release feature that G&G Top Techs have. In the end it didn't work out too well either.

Long story short, the gearbox will not fit. If you decide to modify parts, don't. It will save you a lot of time and headache.
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