Tipmann and Spyder various low end markers stocks, SP Linear, Taso Winforce, Hammerhead
Tipmann A-5, Hammerhead Dominator barrel
Any - I used hard shell ones (Xballs, Toroball, RPS)
Not much more accurate
I bought this one for my old T98 - despite I had "Pro" with longer barrel, accuracy still sucked. So I was looking for something realtively cheap (did not play so much that time) which will improve my accuracy. After reding several reviews I decided for this one (12in) - good references, also look was not so bad.
After my first game I was amazed, hit a guy for long distance with first shot. However it turned up later, it was more or less lucky, sometimes it felt I shoot worse than Spyder Rodeo stock barrels my friens have. So I tested it and result were, that on 15m distance it is - way better than Tipmann stock barrel but only slightly better than Rodeo stock one (TBH I do not remember exactly how many shots I fired and details, just result, only remeber I used Xball bronze paintballs).
Cleaning - not too easy, but also not much more difficult than other barrels, also firing several shots barrel self clean pretty satisfactory.
So, I was not really impressed about accuracy, on the other hand this barrel was better than stock and also better than other low-end barrels.
If you want better than stock barrel, get this one, it is probably one of the best for the price. Your accuracy will slightly improve, however, do not expect miracles. If you want ACCURATE barrel as some reviewers post, you have to spend more on Hammerhead or AA.