Golden Eagle Metal Gearbox Complete Metal Lower Receiver, Black/Tan

This isn't a lightweight shell; it’s a heavy-duty metal lower designed for serious airsoft builders. Weighing in at 3.1 lbs, it offers the mass needed to balance out a full-metal upper and a long handguard. It’s a direct-fit metal body replacement that gives your M4/M16 a professional weight and finish, making it a favorite for Milsim players who want maximum realism.

This is the ultimate shortcut for a new AEG build. It’s a pre-assembled receiver kit featuring a Golden Eagle metal gearbox that’s factory-fitted for a perfect seal and smooth performance. You won’t have to struggle with gearbox shimming or shell compatibility; just add your furniture and go. The Black/Tan two-tone colorway gives it that high-end "operator" look that fits any modern loadout.

Whether you’re ditching a cracked polymer body or just want a more reliable Golden Eagle internal setup, this complete assembly is built for the long haul. The all-metal receiver and gearbox combo means you can run high-torque motors and heavy springs (M120+) without worrying about the shell snapping under the pressure. It’s the fastest way to get a rock-solid, full-metal M4 base that’s actually built to handle high-performance upgrades.

Features:

• Full metal Version 2 rear-wired gearbox
• Black finished aluminum gearbox shell
• High-torque long-type motor
• High-torque steel gear set
• 7mm metal ball bearings
• M120 standard pitch power spring
• Metal and polymer bearing spring guide
• Ported metal compression cylinder
• Durable polymer cylinder head
• Lightweight polycarbonate piston
• Ported polymer piston head
• Specialized polymer air nozzle
• Reinforced polymer tappet plate

Color:

Two-Tone

Material:

Metal receiver and gearbox

Weight:

3.1 lbs

Compatibility:

Golden Eagle M4 lower receivers

Manufacturer:

Golden Eagle