The smaller 21-12G model make an excellent every day carry with the patented Veff™ Serrated edge grinds. The swedged and recurved spear point blades are made of premium 8Cr14MoV stainless steel with a non-reflective black titanium nitride finish which gives maximum corrosion resistance. There are many reasons custom knifemakers choose an InterFrame build with stainless steel liners and G10 scales in preference to aluminum or even titanium scales. First, the aggressive G10 texture gives unparalleled grip. Second, it is very strong. Third, it is lightweight. And finally, G10 is an insulator with a low specific heat. Therefore, it is cooler to grip in the beating desert sun, and warmer to grip at subfreezing temperatures. This M21 model also features the very popular "Carson Flipper" blade extension, which aids opening and acts as an additional blade guard. Unlike the typical custom knifemaker, we are able to engineer our automated liner safety. Automated liner safety is the locking liner safety innovation taken to the next level. The automated liner safety sets a pin between the locking liner and the frame. This pin acts as an additional layer of safety, so the locking liner is less likely to disengage during use. To close the knife, pull the red buttoned safety lever back, slide the locking liner over, and fold the blade into the closed position. Want one of the most secure safety systems on the market? The choice is automatic. As is standard practice on CRKT® folders, lubrous washers 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. It also features a removable stainless steel clothing/gear clip. All fasteners, including the clip screws, are Torx®. Liners, hardware and clip are black oxide coated.