New spring guide from Dr Mugen

Dr Mugen have sent in a video and details of their new spring guide:

New type suspension spring guide "never broken system for marui gear box and piston"
1 .. gear protection
2 .. Piston protection
3. The battery efficiency increases
4. Gearbox durability
5 fire a bullet at a stable speed, accuracy increases
6. Korea was adopted at an Army training durability airsoft gun
7 Any two types, three types can be used gearbox

[youtube http://www.youtube.com/watch?v=bZzXkpxXmng&hl=en]

(Dr Mugen)