I use bushings over bearings for 2 reasons. I run high fps on lipo so the less play on the box, however tiny, the better. And I'm lazy. I like my parts to last. Bushings outlast bearings.
Grand Poobah of T.W.A.T.
RETIRED (for now)
GUN DOCTOR-Fix, Upgrade, Custom Builds.
I build nearly indestructible Lipo-Reliable Mechboxes.
Owner, The Digital Smoker E-Cig Shop