This is a airsoft gun, it is not a real gun nether can it be changed in to a real gun or be used with a real gun.

This is the FGC-6 AEP conversion kit, designed after the legendary FGC-9.
I stumbled across the FGC-9 after watching a documentary about it on YouTube and thought, "that thing looks sick. I wonder if someone already build one for Airsoft".
And someone did.
 build a GBB FGC-6, but it looks very hard to build.
So I decided to build a conversion kit for AEP because it is less difficult to build and many people already have an AEP at home.

Compatibility:
fits: CM.131A, SSE18
doesn't fit: CM.127
most Glock like guns can fit, but you might need to adjust the stock of the FGC-6.
If your gun is too Long, I included a spacer.stl that you can up or down scale, in your slicer, to make your gun fit.

You can also change the Hand guard of the FGC-6 with most short Hand guards made for the FGC-9.
If you take a longer one; my included top rails will probably not fit and if they include a rail it will probably be a Little too short at the back of the fgc6 because I needed to stretch the upper to make the AEP fit.

Parts list:

-m3x12mm counter sunk screw x7
-m3x16mm cylinder head screw x5
-m3x18mm cylinder head screw x1
-m3x30 cylinder head screw x1
-m3x35 cylinder head screw x1
-m3 nut
-m3x6mm heat set inserts x5
-3,2mm washer x4 (optional)
-4,3mm washer
-spring inner diameter 4,2mm; outer diameter 5,5mm; length 36mm x4
-spring inner diameter 5,7mm; outer diameter 7mm; length 19mm x2
-metal rod 4mm wide and 150mm long x1
-metal tube inner diameter 13,7 (can be smaller, but the bb needs to parse throw); outer diameter 16mm; length 115mm (can be longer) x1
-5mm allen key about 75mm long
-glue
-some kind of lubricant
-sandpaper
-under 1kg of filament
-m6x16mm cylinder head screw + m6 nut, both x1 (only if you take the adjustable stock)

How to Print:

All the parts are printable on a standard printer (220x220x250).
I suggest at least 4 walls (0,4mm nozzle), 0,15mm-0,2mm layer height and an infill of 30% (gyroid).
Print slow and hot for the best layer adhesion, I recommend printing with PLA+.

Assembly:

The assembly can be a bit tricky, so I added a assembly guide PDF.

Testing and tips:

I tested the gun multiple times in a cqb environment, and it performed very good.
It is very small and mobile but due to its design you have a better handling then with a normal AEP and the option to mount your favorite AEG attachments on it.
Something to consider: add your battery and adjust your hop up before putting it into the conversion kit.
The FGC-6 magazine has no purpose it is just for decoration, but you can design on that holds your AEP magazine if you want (please upload it, thx :) ).
I will publish The FGC-6 as "still in progress" because there could be errors in the parts list or other errors that I haven't noticed yet.
But please notify me if you found something.
Also, feel free to ask questions in the command section or write me a DM, I will gladly answer all your questions.