PandaSPUR

I finally got my Rapidstrike today and decided I didnt want to wait for my 18650 battery holders to come in. I took a look at the stock tray and figured out its actually pretty easy to modify for 18650s.
I tried to do it in a way that would be reversible if necessary.

Note: I know this is NOT the optimal way to modify a Rapidstrike. This is my quick and simple, almost drop-in first step. Safety wise, I think it is fine as I haven't modified any of the gun's internals at all. Let me know otherwise.

The guide is hosted on Imgur here: http://imgur.com/a/hIzyr


Random rant: On a separate note... I was kinda pissed off about my brand new Rapidstrike. The magazine flywheel switch was jammed, so I had to fix that. And even worse, a wire leading to the pusher motor was broken, so I had to re-solder that.

Just wondering, where do you guys tend to buy magazines and drums from?

The 18 capacity magazines are readily available from retailers, but everything else seems like a pain to get.

I had some luck so far with buying two magazines from the trading section here, but everywhere else I look (i.e. ebay) tends to sell things at a mark up.

Especially the 35 round drums. I'm trying to get one or two for my Rapidstrike build but the only place I can find them is ebay and they're going for $25-30 average.
Even 25 round drums cost $25-30. At that price, I might as well get a Rampage, keep the drum, and sell/donate the rest.

I haven't had time to go find a goodwill in the city yet though, but I feel like nerf isnt as popular around here (Manhattan) since the kids have no where to shoot em. Heck, I didn't even own a nerf gun until we started shooting them at the office.
Are there other good places where I should be looking?