In a category dominated by striker-fired micros, the FN Reflex MRD is hammer-fired — a single-action internal hammer system that sets it apart from nearly every other subcompact 9mm on the market. The 4.5-5.5 lb trigger pull, 15+1 capacity, and tritium front sight package together produce a micro-9mm whose trigger feels closer to a 1911 than a P365 or Hellcat.

At 18.4 oz empty and 1.0" wide, the Reflex MRD sits right in the micro-9 footprint that the Sig P365 defined and the S&W M&P Shield Plus matched. The internal hammer mechanism means the trigger has the rolling break of a hammer system rather than the wall-and-snap of a striker — reviewers consistently describe it as one of the better triggers in the micro-9 class. The MRD optic cut accepts the Shield RMSc footprint directly without an adapter plate, which is rare in this size class.

The hammer system is also the source of the Reflex's most surprising strength: the reset distance is short and the reset itself is tactile in a way striker designs rarely achieve. Owners running competitive timing drills consistently report faster split times than they get with a comparable P365, attributing it directly to that reset character.