MTW Gen2 308 Conversion Kit | The .3D08!
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May 9, 2026
Give your MTW Gen 2 a bold .308 battle rifle look with the .3D08 Conversion Kit.
This is a complete kit including:
Upper receiver
Lower receiver with integrated inner barrel mounting
Adjustable outer barrel system
Barrel nut
Handguard
Custom pistol grip with battery storage
The lower receiver also features a Picatinny rail, so you can mount the stock setup you prefer.
Assembly Guide:
Join the upper and lower receiver with three M5 screws; an M5 screw and nut set is recommended.
Slide the long barrel sleeve into the barrel nut from the rear and secure it with glue.
Slide the barrel nut onto the upper receiver over the barrel and hop-up chamber, then glue it in place.
The outer barrel is split, with the recommended print orientation shown in the pictures. This allows you to adjust the barrel length before gluing it into the barrel sleeves.
The handguard snaps onto the barrel nut and only needs a small amount of glue.
A built-in barrel guide inside the handguard keeps the barrel centered.
Each handguard rail is attached with M5 screws and nuts.
Internal parts fit snugly and function properly. The kit has been tested with the standard hop-up unit.
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