HK MR 556 Trigger

The Geissele HK MR 556 2-Stage trigger has a similar trigger action to the Geissele SSA and can be used in the HK MR 223, HK 556, and HK 416 semi-automatic rifles.

Note: Unlike the standard MR223 trigger, the safety can only be engaged when the bolt is cocked.

Type: 2-stage trigger

First-stage trigger pull: 2.75–3.0 lbs.

Second-stage trigger pull: 1.5–1.75 lbs.

Total trigger pull: 4.25–4.75 lbs. / 1,930 g – 2,150 g

Trigger: M4 Curved

Manufacturer’s product page