GUARDER reinforced V2 gearbox shell (6 mm) is a more durable base for building or repairing AEGs with a Version 2 gearbox (M4, M16, MP5, G3). The metal alloy shell features polished piston guide rails for smooth movement and holes designed exclusively for 6mm bearings. It weighs 350 g and mounting screws are also included. Bearings must be purchased separately.

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This expert product description was prepared by the ANAREUS.cz expert team. All rights to this unique content are tied to the anareus.cz domain.GUARDER reinforced V2 gearbox shell provides a solid base for building a new air seal and gear assembly or replacing a damaged original shell. The body is made of a durable metal alloy and the piston guide rails are polished to allow the piston to move as smoothly as possible inside the gearbox. The shell is designed for 6mm bearings, which are not included and must be selected separately. During assembly, we recommend checking the free movement of the piston, correct gear seating, gear shimming and the position of all other parts before finally closing the gearbox. Although this is a V2-type shell, manufacturing tolerances and related parts may vary between guns from different manufacturers, so some fitting may still be required.
The durable metal alloy shell is designed as a replacement for a standard V2 gearbox or as a base for building a new AEG internal assembly.
The shell features holes designed for 6mm bearings. Bearings with a different outer diameter are not intended for this version.
The piston guide rails are polished, helping to reduce unnecessary friction and allowing the piston to move smoothly inside the gearbox.
The package includes the screws required to secure the gearbox shell, so they do not need to be purchased separately.
The shell corresponds to the Version 2 gearbox design. For individual brands, we recommend checking the dimensions and fit of related parts before installation.
The shell is designed for bearings with an outer diameter of 6 mm. Bearings are not included and must be purchased separately.
Yes. Screws for securing the gearbox shell are included.
The polished guide rails help ensure smooth piston movement and reduce unnecessary friction. During assembly, it is still advisable to check that the specific piston moves freely inside the closed shell.
It is designed for guns using the V2 gearbox standard. However, manufacturing tolerances, receiver dimensions and related parts may vary between manufacturers, so installation without some fitting cannot be guaranteed for every gun.
| Color | Grey |
| Body/receiver material | Metal |
| Gearbox version | V2 |
| Bearings (mm) | 6 (mm) |
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