KNS has come up with a solution for your over gassed Bren 2. They cover all models with the exception of the 8" 5.56.

Features :

• Under normal operating conditions, most Bren 2s are properly-gassed. The addition of a suppressors may cause the Bren 2 to become over-gassed
• Fits 556 Bren 2
• Adjustable Gas Plug
• ,Does not fit 8" 5.56"