Adjustable gas outlet, 5 positions

BURK Adjustable Gas Port/Gas Block for Heckler & Koch and Haenel (5 positions)

For safe and low-wear silencer operation. The adjustable gas vent regulates the amount of gas escaping. This significantly reduces gas pressure during silencer operation.

Position N: Normal operation without a silencer

Position SD: Silencer operation

Position 1: If over-functioning occurs in Position SD

Position 2: If over-functioning occurs in position 1

Position N+: For use with subsonic ammunition or if the firearm is underperforming in position N

(The appropriate setting can be selected based on the combination of barrel length, silencer, and ammunition used)

Available for the following models:

Heckler & Koch MR223

Heckler & Koch MR308

Haenel CR223

The gas block adjustment is made from the front when using a short quad-rail handguard or a slim-line forend (no tools required).