by vulrath » Tue Dec 03, 2013 1:01 pm
(Boy, it's been a while since I've been on this forum.)
If I'm not mistaken, that is G&G's copy of GHK's drop-in AEG conversion kit. I don't have hands-on experience with it, but my gut instinct is to steer clear. Get yourself a good used G&P WOC. As far as maintenance goes, pretend it's a real AR. Breakdown is very similar.
Personally, I run a Viper Tech MK18 with gen 1 GHK mags converted to external regulated CO2 from a tank on my back. It's pricey, but it's the Systema PTW of GBBRs. I've run a WE SCAR, G&P challenge kit M4, AGM, Escort, and the Viper Tech. By far, the VT has been the most reliable, though I rarely clean it (I just throw it in a gun bag and set it next to my other gear).
Long story short, you get what you pay for.