9mm bearing gearboxes from Action
 

1.7J spring? I hope the mechbox shell can handle that....

http://www.wgcshop.com/pcart/shopper...F_cat_Gearboxs

http://www.wgcshop.com/pcart/shopper...R_cat_Gearboxs

http://www.wgcshop.com/pcart/shopper...F_cat_Gearboxs

http://www.wgcshop.com/pcart/shopper...R_cat_Gearboxs

"- Receiver Cover Lock Button"

that's for the AK bolt I'm assuming? That's a nice feature

I'm interested in hearing anyone's feedback about these boxes. They look...plasticky for the stress they're meant to endure, but if they do the job, I'll definitaly grab one.