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5/27/2026 5:29:51 AM EDT
Hello,

I am having a hard time figuring out which triggers will work outside of just buying and testing them. I purchased a factory HK 2 stage 416 trigger and am not impressed. I just purchased a full auto 2 stage LMT trigger to test out, does anyone know if this will work with a 416/mr556?
5/27/2026 10:03:48 AM EDT
[Last Edit: Uys][Edited] [#1]
The LMT semi AXLE and standard semi 2 stage, in LMT lowers, work on my MR556 upper.  
Have not tried to put in MR556 lower.
5/30/2026 1:13:25 PM EDT
[#2]
It needs to be milspec height for it to work. But the mr556a4 that I bought has a really nice trigger and I don't plan on changing it at all.

But also keep in mind that specific MR556 triggers like the Geissele is important because the pistol is harsh on the trigger system and it can break. So don't just buy anything and assume all is okay and well even if it works. If you're dead set on a specific trigger though, you can also remove the safety lever on the bolt carrier so it can be used by any trigger system.

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