i had a stingray for about a year and i found that the gun itself was fairly reliable, and with the addition of this barrel i was able to compete with my friends' piranhas. after selling my stingray i let a friend of mine use my barrel, with that barrel he has tagged me so many times i wish i had sold it with the gun. the barrel itself is not that badly made adn with it my gun was fairly more accurate and a good bit quiter.
Weaknesses:
really since i put electrical tape around it, nothing
Conclusion:
i dont agre with other ppl when they say that the stingray is a piee of crap and that they cant compete with other better guns. and that the barrel helps a lot