The gun fires a 25-millimeter "smart round" that can be detonated at pre-programmed distance, spreading shrapnel in all directions. It uses a rangefinder to figure out how far away a target is, and the operator can manually adjust when the bullet detonates to suit different situations, allowing a soldier to attack entrenched targets around corners and in buildings more effectively.
Geez, I wouldn't want to be on the receiving end of that thing (or a big ol' johnson). Granted it's still no match for my laser blaster. Just sayin', one time I did bring a two-handed great sword to a knife fight.I cut some asshole's legs off with a single swing. It's cool, I'm getting used to the wheelchair.
Hit the jump for a video demonstration of the PEWs in action.