The Extrema Ratio Misericordia was adopted by the 4th Alpine Parachute Regiment, which helped develop and test the product. This fixed blade tactical knife is extremely light and compact, and it can be used both as a main knife or as a backup blade. The blade, made of Böhler N690 steel and heat-treated to a hardness of 58 HRc, is 118 mm long, 4 mm thick, and has a flat edge. The spear point profile features a full-length fuller that makes the blade even lighter, and a ¾ length false edge. The blade is available in the classic MIL-C-13924 Extrema Ratio black finish.
The glass fiber reinforced nylon (FRN) handle has the classic Extrema Ratio grooves that provide a secure grip and is fixed to the tang with a through screw. At the rear end, the handle flows into a large ring, which allows for the use of martial arts techniques and ensures a solid grip for the hand. It is also equipped with a hard metal "skull crusher" appendix. The knife's overall weight is just 87g.
Designed for professional use, the knife emphasizes ease of carrying, accessibility, and extraction in case of need. The knife is secured to the scabbard by a quick-release safety, which can be easily reversed for left-handed use. The high-strength nylon sheath is versatile, and two adjustable loops allow it to be fixed inside the loops of MOLLE systems. The sheath features a conical invitation to facilitate the reinsertion of the knife, and a simple pressure on the trigger safety allows for quick and instinctive extraction.
An optional kydex sheath is available (sold separately), equipped with two flaps of fabric (male Velcro strip on one side and female Velcro on the other) to allow for concealed carrying of the product between a bulletproof vest and magazine pouch. This scabbard also offers the possibility of attaching to an adjustable belt using a belt clip (sold separately).