The FPS caged spring guide GM2E is a replacement part engineered to improve the spring group motion in second-generation gearboxes. Machined from lightweight, strong ergal and fitted with stainless steel ball bearings, it delivers smooth movement and extended service life while reducing spring and pin wear. The AVP nickel-plated base strengthens the gearbox rear assembly and increases pin durability.

Technical specifications

Brand: FPS.

Model: Caged spring guide GM2E (2nd version).

Body material: ergal (high-strength aluminium alloy).

Bearing: stainless steel ball bearings for smooth action and longevity.

Base: AVP nickel-plated for high pin resistance and structural solidity.

Compatibility: designed for second-generation gearboxes; declared 100% Marui compatible.

Function: improves spring travel smoothness and reduces wear, optimising piston/spring cycle.

Product reference: 0847-4852.

Origin: Made in Italy (declared).

Package contents

1 × FPS caged spring guide GM2E (2nd version) with AVP nickel-plated base.

End-user benefits
A robust, lightweight replacement that simplifies maintenance and stabilizes spring behaviour: smoother movement, reduced friction and longer life for rear gearbox components, with straightforward installation on compatible gearboxes.

Warnings & usage information (GSPR and Italian regulation compliant)

Verify compatibility with your replica and gearbox type (intended for second-generation gearboxes) before fitting.

Installation and gearbox work must be carried out by qualified technicians or authorised service centres; improper disassembly may damage the replica.

Inspect the part before installation; do not use if cracked, bent or defective.

Avoid prolonged exposure to humidity or extreme heat; store in a dry, temperature-stable place.

Do not apply lubricants unsuitable for gearbox internals; follow the replica manufacturer’s lubrication guidance.

Keep out of reach of children.

Do not tamper with the product in any way: cutting, drilling, reshaping or other unauthorised modifications will compromise safety, function and compliance.

Entrust any mechanical adjustments to experienced personnel to avoid gearbox damage.

Ensure use complies with applicable Italian laws and GSPR consumer-safety requirements.