I bought this hopper and i went to put it on and i had to sand for thre hours to get it to fit theI it kept falling of so i had to tape it on with black tape but oother than that i would recomend it
i can shoot it at 12 balls a second no probablem iit works good on all firing modes that one probablem with sanding pissed me off though
Conclusion:
I gave it a eight cuz of the feed neck probablems its asome if u donrt have a piranha or mongoose