HALO QD Suppressor issues

I just bought a Gemtec HALO silencer for my Echo1 MOD 4 CQB M4 and when i fire the BB's shoot though one of the smaller holes around the primary ones....is this a common problem? Is it a hop up issue or do i just need to go out and by a longer barrel to extend through the silencer? The gun is totally stock and i just got the silencer and noticed that the BB's curve out to the right through one of the smaller holes. Anyone else have this issue? They also shoot through the main hole but its never the same thing and its frustrating....any help would be appreciated.