Data Driven AR15 Rev. 2: Added M-Lok Vs KeyMod, Discussed Aero Precision M4E1

The Data Driven AR15 project marches on. Based on the data, I plan to update my rig to M-Lok and keep the M4E1. Oh, and what is that in the above photo? Does anyone have a spare dual reading thermocouple laying around with extra long temperature probe?

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