I only use it for countering sweaty players i.e thorn,felwinter blinkers. The last word is made by aggressive ballistics,perfect balance and the unique perk the last word.you must unlock and use all these perks to feel the power. Tips:don't hold the trigger down for the full auto feature.tap each round. Always shoot for the neck. Fire from the hip when you can,I feel they always go down a bit faster that way. You talked about the time to kill is like a second.that is true but it doesn't happen that often.tlw some times rewards you with bonus damage when firing down sight which will result 111 damage per headshot which will kill very fast,it's a bug though and is not the intended way it was meant to proc.