Need a bit more power for your well m4. Then this upgraded Well gearbox is for you.
All the hard work done: shimming, greasing, and wiring.
What’s been upgraded:
– Metal 18:1 Steel Gears
– Oversized Green O-Ring
– Polymer Plunger with Steel Teeth
– V3 Tappet
– Metal Spring Guide
– Extended Thicker Battery Wire
– Dean Male Plugs