L2A3 Trigger Pack.

Morning, Afternoon, Evening or good night all, I recently picked up an old Sterling L2A3 for a very good price as it's missing it's trigger pack. Unfortunately it is a deac but it's a UK Old Spec so isn't welded solid like most. I wasn't looking for one at the time but it looked an interesting project and as it appears I collect projects, I just paid the guy and it now resides with my STENs. My question is, would any of the forumites know where I could find a trigger pack for said SMG? The US is the most obvious place but I know they don't export so anywhere else?

BP