EDIT !!!!!!!!

Thanks to a someone helpful on this forum I’ve found out what this is !!

it’s a ghk gbb kit you put in a aeg reciver

That being said I’m gonna semi boneyard it cos of the faulty hop is the only thing not working on this 

1x leak free mag 1x leaky mag

any questions just ask 

asking £100 all in posted n fees included 

still mega open to offers …. 

swap wise looking for a ssx23 and/or any kreuzotter bits 

thanks for looking