Geissele HK MR 556 Trigger

The Geissele HK MR 556 Trigger was created with Military and Law Enforcement in mind. It is similar to Geissele’s SSA Trigger and can be used in both the HK 556 and semi-auto HK 416’s.


Type 2 Stage
1st Stage Weight 2.75 to 3.0 lbs.
2nd Stage Weight 1.5 to 1.75 lbs.
Total Pull Weight 4.25 to 4.75 lbs.
Adjustable No
Recommended Use Law Enforcement, Home Defense and Hunting
Pin Size Mil-Spec
Size Standard Mil-Spec Pin
Weapon Platform HK 416/MR556
Intended Function Military, Law Enforcement and Hunting
Trigger Bow Type M4 Curved
Notes After installing the MR 556 trigger you must cock the hammer in order to engage the safety unlike the HK trigger system where you can place the selector on Safe with the hammer forward.



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Additional information

Weight 1 lbs


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