Description
G&G Completed Gearbox for GR25 (Semi only – 400FPS)
This is a complete, assembled replacement gearbox from G&G for its GR25, the AR-10 style DMR in G&G’s range. Our listing describes it as semi-only and 400 FPS, matching the GR25’s role as a semi-automatic designated marksman rifle.
G&G Armament is one of the best-known Taiwanese airsoft makers, and buying an original G&G gearbox is the surest way to get a correct fit. A complete gearbox is the most straightforward way to bring a GR25 back into service after a gearbox failure, or to keep a ready-built spare for important games.
Why choose a complete gearbox
Rebuilding a gearbox part by part needs time, tools and plenty of experience. A completed gearbox arrives assembled, so a technician can replace the unit as a whole and get the rifle back in action with minimal downtime.
Retailer listings describe the GR25 itself as a semi-auto only rifle, so this semi-only gearbox is in keeping with how the rifle is designed.
Fitting
Fitting this part means opening the replica and swapping the gearbox, so it is best suited to players with technical experience or to an airsoft technician. Always remove the battery and magazine first, take photographs as you go and keep track of small parts.
Test-fire the rifle after fitting and have it chronographed before taking it to a game. Power limits vary from site to site, so check your site’s rules for DMRs.
Key features
- Complete, assembled gearbox
- Made for the G&G GR25
- Semi-only, as listed
- Listed at 400 FPS
- Direct replacement unit
- Original G&G part
Compatibility
This gearbox is made for the G&G GR25. G&G gearboxes vary between models in their electronics, wiring and trigger arrangement, so it should not be assumed to fit other rifles. Check your rifle model before ordering.
Care and maintenance
Keep the gearbox clean and lightly greased where the manufacturer’s assembly calls for it, using an airsoft gearbox grease rather than household oils, and check for wear whenever it is opened for servicing.
Use a battery that suits the rifle, and remove it after each game.
Who is it for?
This gearbox is for GR25 owners, airsoft technicians and players who want a ready-built replacement or spare for this rifle.
Please note: The rifle, motor and battery are not included unless shown in the listing. Professional fitting is recommended.
