Marbalizers, not diablo blaze its too small, any medium paint
Strengths:
super silent
very accurate
the rifiling is the key factor in the accuracy
Weaknesses:
a little hard to clean
Review:
this barrel is the best ive seen in my whole life as a paintballer it is the best upgrade that can be done to a spyder it is extremely silent and accurate at close and far distances. well i gotta talk some more cuz i have to little bit amount of words so let me also add that never to get a barrel by 32 degrees or smart parts except its a freak or all american(kinda good) armson better.
Conclusion:
Get the armson for any gun you have it is totally worth it. dont get any other barrel this is the best one.except if you have money for a freak system but the freak isnt as silent as the armson.