Overview: KSC M9 Homemade Bullpup Kit

Before jumping into buying anything, i need to point what kind of difficulties you'll be facing making this bullpup.
Let's start:

DIY Tool For Disassembly Airsoftgun : PIN PUNCHER

Why spending $5 for single pin puncher when you can get 1 set?
Really, just buy cheapest Eyeglass Screwdriver than flat sand the tip, see picture below. Watch right screwdriver, i already flat sand it. Remember to sand it really flat, no round corner.

Fixing Double Feed, Jammed, Broken BB's on KSC-KWA M4 GBBR

A very frustating problem with ksc/kwa m4 gbbr is what usually called, jamming coused by double feed, broken bb's on chamber or around bolt. I've face this problem, and this cause by chipped arm of loading nozzle.

GHK AKM with Home Made Upper Front Grip

This is 2012 version of GHK AKM, and this babe is so beautiful, works so greate. No major problem. I bought this from friend and iam the third owner. Yes iam!!hehehe. The only thing you need to replace auto sear that will broken somehow, change to steel version.

At Last, Perfect Working Copy of KSC M4 GBB Hammer

At last, friend of mine help me make copy of this hammer (thank you very much dude!).
Now I can have my KSC M4 running and kicking.