Rival Hera, Nemesis, Khaos, Adventure force Accelerator, Quantum, DZ velocity Battery thumb screw

Works as expected

This makes it a lot easier to change batteries.

Easy install, makes taking the rechargeable battery painless

Works great

I'm usually very satisfied with OOD products, but these battery thumbscrews failed in every category. I bought two, one for each of my Nemesis blasters, and neither one will fit far enough in for the threads to engage. I haven't decided if I should file down the **** collar or expand the hole so the **** will fit far enough in to engage the threads. Either way, I'm disappointed.