"The MFO is the smaller version of the MF series. It maintains all the characteristics Extrema Ratio are known for; tough, rugged design and precision manufacture. The size of a conventrional pocket knife it fills the gap in the Extrema Ratio range for a multi use, compact folder.
All the MF knives feature a rear glass breaker. The circular milling on the handle makes it easier to change the grip position from sabre to reverse. A great feature of the MFO is the sub hilt, which makes the grip very stable and avoids slippage of the hand onto the blade."