The Magpul FPG, otherwise a Glock-in-a-box. Lucky for me So Go got some in. This gun is just a blast to use so far. I haven't had any problems with the firing or the unfolding of the gun. The only real problem with this gun is that I am still unsure what it is supposed to look like folded up. So here are the real pros and cons:
Pros:
Very compact
Very light
Uses a Glock 18 slide
Top rail for any scopes or optics you would like to mount.
Magpul trades
Cons:
It uses a Glock 18 slide.
The orange on the end is like trying to find the sun, you will indeed find it.
When using regular (not extended) Glock mags, you have to take off the butt plate.
It uses propane or green gas (bad for mid-western states or the northern states)
Internal fire selector
The Glock 18 Slide:
It is both a pro and a con as mentioned above. A pro because with the ATP recently coming out, the ATP mags fit. Also, KWA still sells the parts if something ever happens. It is an extremely good note for me because I have another Glock 18. Glock 18s also carry a very fast fire rate behind them.
It is a con that it uses this slide, because 18s go down quick once that pin falls out. To much wear and tear. Which hopefully KWA has found a way to fix the pin failing, with this being a gun that uses this slide.
If you've ever seen this thing, you may think it is extremely uncomfortable to hold. I did not add anything about that because that is something I found to be to opinion-sporadic. I do personally find it extremely comfortable, some people probably wont.
Over all, I personally give this gun a 4.5 out of 5.