i was on smartparts i got the Sp-1 and theres a Tactical barrel which is a $50 barrel but then theres other barrels like the freak jr and those other ones that are like $20 cheaper then if u do buy now it says u can get like the smart parts threads or its just type of barrel so is the Tactical on the only one i can get for the SP-1
First I would contact smart parts. Second go to pbreview.com they have reviews on just about anything paintball. You can find out what people think of the barrels and their quality. You mite have to be careful when buying barrels to make sure they have the thread pattern that matches your marker. Good luck. Hope this helps.