
The Materials I think i probably need are...
$10 - 12V gear box (from RC stores)
$5 - 7cm length 1.5cm diametre spring
$6 - Toy MP5 Navy (not to scale)
$1 - O- Rings
$3 - Piston chamber
$5 - aluminium tube
$1 - Pen spring (for spring magazine)
$2 - (some sort of 6mm tube that can be bendy)
$10 - aluminium gears
$2 - Battery holder
Total - $43'ish lol couldn't be bothered counting properly
The Plans I drew with MSPaint isn't to shabby imo lolol


Basically the same principal as this design on wiki...

The same concept, different design. The plunger-piston and piston chamber is probably easier to build with this design. I've also included the part where there is another tube inside the main barrel so the bb doesn't fall out. The most annoying part of this gun probably piecing the bits and pieces together though
