The Armourer’s Bench: Steyr ACR Prototype Rifle Video
It’s a flechette-firing bullpup rifle either in semi-automatic or 3-round bursts at 2200 round per minute designed to have 100% increase hit probability over the M16A2. It uses space age polymer body and magazine reminiscent of the Steyr AUG.
I’ve personally handled the Steyr ACR rifle at the Steyr-Mannlicher factory in Austria published at our sister site The Firearm Blog. It’s a slick rifle that feels very much like a production rifle had it been fielded today.