Guarder Ball Bearing Spring Guide for Airsoft AEG Gearbox (Type: Version 7)

"Too big for HK UMP45 gearbox, but fit fine with the use of a dremel tool on the two prongs sticking out of the sides. Not a big deal but keep in mind it may not work in all V3 gearboxes without some modification.
Other than that, seems decently high quality and would recommend

"As tough as a rock, this spring guide is awesome. Metal spring guide with ball bearings. Mine came as a dark gray color, but makes no different. Very easy to put in the gearbox.

Pros:
- Easy to install
- Feels extremely tough (metal), won't be breaking any time soon.
- Ball bearings

Cons:
- None to list

5/5

"This is a very high quality ball bearing spring guide. I was shocked when i first opened it. Dropped right into my JG AUG will no problems. highly recommend it.

"Nothing bad to say about this guy. Fit perfectly in my UTG M14. Feels rock solid. Would highly recomend considering my stock guide snapped with a M130 spring.