First Halo SMG GBBR in the world Completely custom chassis designed around the AAP01 internals. Custom nozzle, TDC hop chamber and side loading mag. The M7S uses an HPA-tapped AAP01 mag to run the system while and AEG style side loading mag feeds BBs. Both semi and full auto settings from the AAP01 are usable. This is a DIY kit. You will need a donor AAP01. This does not come pre-built or with an AAP01. Test firing: https://imgur.com/a/tXpmRuz