System Drop In M170 Gearbox

Question:
 I was thinking about purchasing an m170 drop in gearbox manufactured by Systema. I know Systema makes good airsoft parts, but I was wondering what you think about there gearbox.  I was also wondering if I have to do any modifications to install this gearbox. I was going to install it into a KWA.

Answer:
Yes it does fit and works well. It installs easily because its pen is in the same position. You can go to the KWA forums to view some photos of it.

Even though it will work, I wouldn't recommended purcasing it because it is way to expensive. You can purchase gearboxes of similar quality for a lot less. In fact I would suggest that you upgrade your own AEG by purchasing the neccessary parts. Some of the parts you will need will be a piston such as the SHS Piston or the similar SHS airsoft Piston. You will also need gears such as the SHS Airsoft Gears. You will also need a variety of other upgrades, but the parts will depened on what you want to achieve.