SHS 7mm CNC Precision Steel Grooved Bearing Bushing for Airsoft AEG

"Exellent bushings. I would recommend them to anyone.

"Installed these in my Echo 1 P90, All six work flawlessly and spin smoothly. Anyone looking to upgrade their gearbox should consider these.

"Absolutely the best set of bearings I've ever installed in a gearbox. They're amazingly smooth. When I spin the gears while shimming they just go and go and go and go. I've installed these gears in multiple gearbox versions and brands and have had absolutely no fitment issues.

Also, I ran these bearings in a gear box with a slightly bent stock gear set. Had to do some extreme shimming to make them not contact. Regardless of this, when the replacement gear set came in and I installed and shimmed the new gears, it was just as smooth as the day I first installed the bearings. And that's with 15,000+ rounds through a gearbox with bent gears.

I would highly recommend these over any other 7mm bearing set.

Pros:
Rediculously smooth
Excellent fitment
Extremely durable

Cons:
None what-so-ever

"There are better ones out there, but for the price, they are far better than the plastic sleeves your guns tend to come with.