The Single Action OTF automatic knife that started it all for Microtech Knives,The Halo 6 from Microtech. A longtime staple in the Microtech O.T.F. lineup. The Microtech H.A.L.O. (high altitude, low opening) is known for its lightning-fast blade deployment. This single action O.T.F.(out the front) fires with the touch of a button and will retract by pulling the charging handle. Different from the other OTF models from Microtech which feature double action auto deploy and retract with push and pull of a thumb slider. The unique shape and slender design of the 6061-T6 anodized handle allows for easy conceal carry. The Halo comes in a variety of colors and Marfione Custom versions come in high end materials and blade finishes.The Microtech Halo VI comes with a kydex sheath for easy belt carry. Some earlier 2018 models came with a safety switch on the button allowing for the sheath to be spared. They have since discontinued the safety switch model. The HALO 6 comes in 3 blade styles, S/E Single Edge Clip Point, T/E (Tanto Edge) and HH (Hellhound). Overall length is 10.6" and the blade measures 4.4".