Description
ACM Spring Guide with Bearing V2
This ACM spring guide with bearing is made for version 2 gearboxes, the type used in M4, MP5 and many other AEGs. The spring guide sits at the back of the gearbox, holding the main spring straight and acting as its rear seat.
A bearing at the spring guide lets the spring twist freely as it compresses and expands. Springs naturally rotate slightly as they work, and allowing that rotation reduces stress on the piston and spring and can make the gearbox cycle more smoothly.
Why a bearing spring guide
Without a bearing, the twisting of the spring is resisted by the guide and piston, which can add friction and wear. A bearing spring guide removes much of that friction, which many technicians fit as standard when building or servicing a gearbox.
A spring guide is also one of the parts that has to be removed when changing the main spring, so a good quality guide makes later spring changes easier.
Fitting
Fitting the spring guide means opening the gearbox, unless your replica has a quick-change spring system. Release the spring tension safely before opening the shell, and keep track of the trigger and anti-reversal latch springs. After reassembly, test-fire on every mode and have the replica chronographed, as changes at the spring end can affect power.
Key features
- Spring guide with bearing
- For version 2 gearboxes
- Lets the spring rotate freely
- Can reduce friction and wear
- Replacement or upgrade part
- Affordable ACM component
Compatibility
Made for version 2 gearboxes. Spring guide fit varies between makers and some gearboxes use a quick-change spring system with their own guide. The original listing advises verifying your gearbox version before ordering. If in doubt, contact us with your replica model.
Care and maintenance
Use a proper airsoft gearbox grease, applied sparingly, rather than household oils, which can attract dirt or damage plastic parts. Check moving parts for wear and correct shimming whenever the gearbox is open for servicing.
Keep the replica’s battery in good condition, as a weak battery makes the motor work harder and puts extra load on every part of the drivetrain.
Who is it for?
This spring guide suits technicians and experienced players building or servicing V2 gearboxes who want a smooth-running bearing guide.
Please note: Fitting by an experienced player or technician is recommended. Spring not included unless shown.
