Buffer Tube M4 / M16 | AEG (automatic electric gun) | Cyma

Buffer Tube M4 / M16 | AEG | Cyma

This buffer tube forms the connection between your stock and the gearbox of an M4 / AR15 AEG (automatic electric gun). The tube screws onto the rear of the gearbox and supports the retractable stock, while the hollow interior is used to store your battery. You replace or install this buffer tube when switching to a different stock, expanding your build with a battery compartment in the tube, or when setting up a complete M4 build from scratch. For those looking for an airsoft buffer tube for an M4 AEG (automatic electric gun), this is a direct solution including the necessary mounting components.

Technical specifications

This buffer tube is constructed from aluminium with a black finish. The length is 270 mm and the type is an M4 configuration. The set is supplied with complete mounting hardware: two mounting bolts, a ring, an end plate, an o-ring, and a set of mini Deans connectors with heat shrink wrap. A battery is not included. The diameter of the tube determines whether it falls under MILSPEC or COMSPEC; measure this yourself to determine the correct stock fitment.

Compatibility and application

This buffer tube is intended for CYMA and most M4 / AR15 AEG (automatic electric gun) replicas. As a general guideline, tubes and stocks from Tokyo Marui, VFC, G&G, and clone M4 AEGs tend to follow MILSPEC dimensions. Please note for M4 GBB (gas blowback) and AR15 variants: those tubes are often larger, so measure the diameter of your tube carefully before ordering. With brands such as Magpul, stocks are sorted by MILSPEC or COMSPEC, which makes selection more straightforward. Due to varying tolerances per manufacturer, we cannot guarantee that the stock will fully lock onto the tube. The installation is suitable for both standard and more advanced builds; basic knowledge of disassembling the gearbox and connecting the wiring is required.

Ready to add the Buffer Tube M4 / M16 | AEG | Cyma to your setup?