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Geissele Automatics HK MR 5.56
The HK MR 556 trigger is similar to the SSA Trigger and can be used in both the HK 556 and semi-auto HK 416. 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.
Similar to the SSA Trigger Can be used the HK 556 and Semi-Auto HK 416 Made in the USA
