Our aluminum InterFrame build SF folders share a unique design offering a combination of Carson Series features requested by military procurement specialists. The deep-bellied spear point blades were specified because they offer maximum strength. The open build allows two Carson Flippers to be incorporated, resulting in a true hilt— very rare in folding knives.
M21™-14SF Aluminum. Our production aluminum frame SF is based on Kit Carson’s custom designs, with contoured handles of black, hard anodized 6061 T6 aluminum, with a perimeter radius. Stainless steel locking liners with friction grooves give positive locking. Blade steel is AUS 8 stainless with a Combined Razor-Sharp and Triple-Point™ Serrated edge.
Blade, frame and hardware are non-reflective tactical black. The blade receives a black titanium nitride coating for maximum corrosion resistance. Kit’s trademark dual checkered thumb studs are standard. One-hand opening and closing is quick and smooth.
It also features our exclusive patented (1) AutoLAWKS™ automatic safety, which turns the folder into a virtual fixed blade automatically.
All knives in this series are equipped with clip options that allow four-position carry on belts or webbing. Caution: These knives are not designed for tip-up in-pocket carry. They are special knives, designed by the military for special forces use.
Dimensions Open Overall Length 9.25 inches Closed Length 5.375 inches Weight 5.7 ounces Blade Length 3.875 inches Thickness 0.14 inches Material AUS 8 Blade-HRC 58-59 Finish Titanium Nitride Grind Hollow Style Deep-Bellied Spear Point Edge Triple-Point Serrations Handle Material Aluminum Liners 420J2 Lock Type Locking Liner Safety System AutoLAWKS Carry Carry System 4 Position Clip