Waffen Burke Gas Block MR223 11"

Reduces wear and gas blow back when using a suppressor on the HK MR223 10"-11" Barrels
Fit all MR223/MR556/416
Position N: Normal use without suppressor
Position SD: Suppressor mode
Position 1: When over gassed in Position SD
Position 2: When over gassed in Position 1
Position N+: For use with low pressure ammunition or when undergassed in Position N
Adjustable without tools from the front, when used with short Quad-Rail or Slimline Handguard.
Fast and simple installation. No gunsmithing required.
Material: Steel
Surface: Nitrided
Weight: 180 g
Manufacturer: Waffen Burk (Germany)