Geissele Automatics was established in 2004 as a manufacturer of trigger mechanisms for the AR-15 rifle. Rely on Geissele when you expect superior performance, quality, and reliability.
The HK MR 556 trigger is similar to our SSA ( Super Semi-Automtatic) with a 4.5 total pull weight. It can be used in both the HK 556 and semi-auto HK 416's.
Features and Specifications:
Manufacturer Number: 05-220
HK MR 556 TRIGGER
2 Stage Design
1st Stage Weight: 2.5lbs
2nd Stage Weight: 2.0lbs
Total Pull Weight: 4.5lbs
Pin Size: Mil-Spec
Recommended Use: Law Enforcement, Home Defense, Hunting
HK 556 and semi-auto HK 416 rifle systems