Originally Posted by kalnaren
I opened it to swap out the spring with a stock CA one. I think I'll just order a new complete mechbox for outdoor gaming. Gotta love the P90.
Yeah! I bought mine when I was all new to airsoft, and was blown away by how easy it is it take out the mechbox, compared to most other softguns. My SIG 552 is a nightmare to disassemble in comparison. I also decided to go for a 2x mechbox setup, as opposed to upgrading my stock TM one. That way I can have one for indoors (300FPS or less), and one for outdoors (350ish FPS). Just make sure you take off the upper receiver, when you insert the mechbox!