If you mean the Delta strike I found no real difference to a stock barrel other than the fps drop. I actually thought the flyers were worse.
Maybe someone can answer this for me, why would you want a barrel that has that large of an inside diameter?
Could you explain how, you would assume a TBB has less space for variance in where the BB will fly where as a WBB would be relying on equal air pressure from each side of the BB if that makes sense?
So they're only good with HPA guns? Was going to fit it to my M16 but I reckon the stock tightbore is good enough for it.
If this is the Delta Strike then I'd avoid. Plastic window takes a lot of effort to get right. Just stick with a PDI 6.08 or something.