Metal outer barrel piece for electric weapons. One end has an internal thread and the other an external thread. Both 14mm left-handed. Common compensators or other shock absorbers can be mounted on the external thread. Designed for M4 weapons in appearance, but the barrel can be screwed onto most other weapons. For example G36, AK, P90, MP5, SCAR...etc.

The total length of the extension piece including the thread is 4cm, while it will extend your outer barrel by 2.8cm.