KC-02 "MK2 35" Bullpup Stock by 0235

3D printed Bullpup stock for the Airsoft "KJW KC-02"

You will need some hardware like M3 dome head bolts, M4 socket head bolts, a couple of springs, and some 2.5mm metal rod.

There is a link to a YouTube Video for assembly. Some slight changes are the Buttpcd now screws on with three M3x8 screws

The tallest part is 242mm, so make sure your Printer is tall enough

Please also see the PDF files for bill of materials, assembly drawing, recommendation, and licence.

QTY Type Dims Name Extra info

2 Accessory N/A KC-02 20mm rail part of default ASG STC
6 Bolt N/A KC-02 20mm rail bolts part of default ASG STC
1 Accessory N/A KC-02 pistol grip part of default ASG STC
1 Bolt N/A KC-02 pistol grip bolt part of default ASG STC
1 Washer N/A KC-02 pistol grip washer part of default ASG STC
1 Nut N/A KC-02 pistol grip nut part of default ASG STC

1 rod 2.5mm x16mm for front guide metal rod needs to be cut to length
1 rod 2.5mm x17mm for trigger metal rod needs to be cut to length
2 rod 2.5mm x3.5mm for centre guide metal rod needs to be cut to length
2 rod 2.5mm x6mm for rear guides metal rod needs to be cut to length

27 Bolt M3 x 8 M3x8 dome bolt "Socket head button screw"
2 Bolt M3 x 16 M3x16 dome bolt "Socket head button screw"
5 Bolt M3 x 20 M3x20 dome bolt "Socket head button screw"
4 Bolt M3 x 30 M3x30 dome bolt "Socket head button screw"

2 Bolt M4 x 10 M4x10 socket bolt "Socket head"
1 Bolt M4 x 35 M4x35 socket bolt "Socket head"
1 nut M4 M4 nut NOT a Nyloc

1 Grub Screw M5 x 8 M5 Grub Screw

1 Accessory 6mm 6mm plastic BB you should have one of these!

1 Spring 4x8mm 4mm diameter, 8mm long compression spring
2 Spring 5.3x17mm 5.3mm diameter, 17mm long compression spring
OR OR OR OR OR
3 spring N/A Clicky pen spring CUT TO ABOVE DIM LENGTH

THE MORE WALLS, THE STRONGER!

Most of the large parts were 6 walls,and the smaller parts were 4. In Cura I used the "cubic subdivision" as this gives quite high infill density near the skin, but hollower near the middle.

Most of the files are the "correct way up" for printing, though always make sure to "lay flat on bed" as some of these were difficult to position the right way up when exporting them. This means some of the pieces will need support, though as much effort has been taken to reduce "touching all surfaces" supports.

The "Rear stock" has a custom support structure that you can use