The Rampuri best combat knife origin is quite an interesting thing. Actually, the Rampury knives have many similarities with the Navaja Folder such as the step locking device and folder. The navaja blade heel and backspring were intelligently readjusted to make a lock mechanism for the blade. It happened during the first part of the 18th century. Having opened this ‘rambo knife’ blade from the hilt, the lock mechanism enabled blade to rotate into the completely uncovered position. Then it was locked into certain position. The locking device included pinion teeth (piñones or muelles) split into the blade heel (hoja con talón) that are connected by a bulge which is set into the backspring or single spring-loaded metal flap when the best combat knife is opened. The pinion tooth keeps the blade closed in the completely opened position. The fastening-tooth lock-blade navaja was known as a “navaja de muelles” or “navaja de siete muelles”. When the blade is opened, metal with metal interaction gives a peculiar clicking sound. Consequently, the “navaja de muelles” was commonly coined as “carraca”.