No products
View larger AirsoftPro AEG aluminum ported cylinder is an upgrade part for AEG airsoft guns with an inner barrel length of 200 to 400 mm. It is made from an aluminum alloy with an anodized finish that provides low weight, good wear resistance, and smooth piston movement. Thanks to the ventilation ports, it delivers the correct air volume for guns with short to medium-length inner barrels such as the MK18, M4.

For more than 25 years, we know what you like about airsoft.
ASPRO277
The AirsoftPro NBU CNC Aluminum Flat Piston Head with Bearing is a durable upgrade piston head designed for New Bore-Up (NBU) air system AEG airsoft guns. It combines a lightweight aluminum body, a ball bearing, and dual O-rings for improved air seal and more precise piston guidance inside the cylinder. It is an excellent choice for building a reliable...
The AirsoftPro aluminum ported cylinder is designed for AEG airsoft guns with an inner barrel length of approximately 200 to 400 mm, including platforms such as the M4, SR16, MK18, and MP5. Precisely positioned ports optimize the compressed air volume for this barrel length, contributing to consistent performance. The cylinder features standard dimensions for common AEG compression parts and is not compatible with NBU (bore-up) cylinder heads or piston heads.
The aluminum alloy provides low weight while maintaining sufficient strength for both standard and upgraded builds.
The ported cylinder design is intended for AEG rifles with inner barrel lengths of approximately 200 to 400 mm.
The smooth anodized finish reduces piston friction and contributes to reliable operation of the compression assembly.
Dimensions match standard AEG cylinders, making it suitable for most common gearboxes.
The cylinder is not compatible with NBU (bore-up) cylinder heads or piston heads and is intended for standard compression assemblies.
| Variants | 200–400 mm |
| Color | Black |
| Body/receiver material | Metal |