Summary

Airsoft Pro Gen2 Hop-Up Chamber Unit for Well MB-01/04/05/06/08/13/14
v1 is a basic modell
v2 you can glue or print some rubber, to absorb the hit

Chamber is compatible with the following guns: Well MB01, MB04, MB05, MB06, MB08, MB13, MB14, G21, G22, ASG AW308 L96, Maruzen L96.