I love that he thought the barrels were "knock off", when they didn't claim to be any brand. In reality they were a barrel that never made it into full production but are fantastic barrels all the same.
I believe one of the very first prototype is stuck in a 'cocker of mine somewhere because one of the partnership involved in the project was my brother and he was experimenting with bonding compounds to attach the CF (which goes to the breach) to the unitech back, one of the first bonding compounds was too weak.
Think found a more successful one after that, so the only "dodgy prototype" version of this barrel is stuck in my marker, all the others that made it into the real world (mainly through UK Hitmen?) were fine.