Description
AGM M4 Front Wired Gearbox (Metal)
This is a metal M4 gearbox from AGM with front wiring. AGM is a budget-friendly airsoft manufacturer whose M4-pattern AEGs are popular as first rifles, and this gearbox is listed as a replacement for the AGM M4. The wiring position decides where the battery is carried: front-wired gearboxes send the battery leads forwards to the handguard area.
Replacing the gearbox is often the most cost-effective repair when an AGM M4 has suffered a gearbox failure, and a spare unit is useful for players who want to keep a budget rifle running. A rear-wired version is also listed, so pick the one that matches your rifle.
What the gearbox does
The gearbox houses the motor-driven gears, piston, spring, cylinder and trigger unit. Each shot, the gears pull the piston back and release it, sending air through the nozzle to fire the BB. It also controls the selector and the feeding of BBs into the hop-up chamber.
Before you buy
The listing does not state whether the gearbox is supplied complete with internals or as a shell, or what spring and gears it uses. Please contact us to confirm before ordering if that matters to you. Check your rifle’s wiring position: a front-wired gearbox only suits a rifle set up for a front-mounted battery unless you rewire it.
Fitting
Swapping an M4 gearbox involves separating the upper and lower receivers, removing the pistol grip, motor and stock, and transferring the selector parts. Remove the battery and magazine first, and take photos as you go. If you are unsure, a technician can fit it for you.
Key features
- Metal M4 gearbox from AGM
- Front-wired
- Battery leads run forwards
- Replacement for the AGM M4
- Cost-effective repair option
- Rear-wired version also listed
Compatibility
Listed for the AGM M4 with front wiring. Confirm the model and wiring configuration against your replica before purchase, as the original listing advises. Motor and battery are not listed as included.
Care and maintenance
Keep the internals lightly and correctly greased and use good quality seamless BBs. Store the battery off the gun. If the gearbox becomes noisy or the replica cycles unevenly, stop and have it checked before continuing.
Who is it for?
This gearbox suits AGM M4 owners with a front-wired rifle who need to replace a failed gearbox or want a spare.
Please note: Motor and battery are not listed as included. Confirm compatibility before ordering.
