When a series like Kit Carson's aluminum handled line has been so successful, it is bound to spark calls for variations. In this case, the request was for a spear point blade similar to Kit's M18 design. As soon as we saw the first sketches, we knew we should offer it in two sizes similar to the Little Bulldog and Big Dog. The swedged and recurved blade is ground to a spear point shape, using premium AUS 8 stainless steel in non-reflective frost finish to offer superior edge retention. The grind incorporates a false top edge and deep belly, yet retains a full width central spine for most of its width for maximum strength. There is a choice of both Razor-Sharp and Combined Razor-Sharp and Triple-Point Serrated edge grinds. Teflon bearings at the blade pivot assure velvety smooth one hand opening and closing, using Kit Carson's trademark dual checkered thumb studs which also act as a blade stop.

M21 models feature the very popular Carson Flipper blade extension, which aids opening and acts as an additional blade guard. Kit Carson's open build uses contoured handles of 6061 T6 aluminum, hard anodized charcoal gray. They are CNC machined with a perimeter radius for a comfortable grip with or without work gloves, skeletonized to reduce weight. There is a single stainless steel locking liner with friction grooves for positive locking. Columbia River have also incorporated the patented Lake And Walker Knife Safety into the M21 models, which converts them into virtual fixed blades when engaged. Every model features a removable Teflon plated stainless steel clothing/gear clip. All fasteners, including the clip screws, are Torx.