KWA M4 Complete AEG Gearbox
[03935]New to airsoft? Here are some safety tips for airsoft guns that we recommend following.
Description:
This is a complete gearbox straight from KWA, the same thing that goes into their renowned M4 series AEGs. This gearbox is wired to the front and fits into the KWA Metal receiver, it may fit into other receivers but cannot be guaranteed by Airsoft GI.
- Specifications
- Manufacturer: KWA
Just a tip: all you must do to let it fit in M4 receivers is replace the air nozzle with an M4 air nozzle.
I've had this gearbox for about 5 months and there is no wear on ANYTHING. My first piston stripped on a lipo and I bought a replacement KWA piston and shaved the tooth right next to the initial catch tooth, works flawlessly now. I replaced the piston head with a systema duracon bearing piston head, but that gave terrible compression so I added on a #14 O ring from ACE hardware. (systema uses a slightly small O ring.)
Hope this helps!
NOTE: THE AIR NOZZLE WILL NOT WORK WITH REGULAR M4 HOP UPS, AND NEEDS TO BE REPLACED WITH A STANDARD M4 HOP UP BEFORE USE.
Pros:
Hi torque gears
reinforced gearbox shell
8 and 9mm bushing combo
sector chip
M120 equivalent
polycarbonate piston
metal spring guide
lipo ready
great wiring
decent compression
Cons:
aluminum non ported piston head
need to shave one tooth off the piston before lipo use
the greasing could have been better