VIše se oslanjaju na ergonomiju AR-15/M16/M4 nego na koncept mehanizma. Ergonomija je vrhunska.
HK416/47 radi na principu kratkok trzaja plinkog bata, a ne preko cevčice. HK416 je mehanizam G36 u M4 odelu.
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Obširnije oko
gas vs piston