These knives share a unique design offering a combination of Carson Aluminum M16 Series features requested by a military procurement specialist. The combination edge 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. Blade, frame and hardware are all non-reflective black. Two sizes are available. The SFs also feature the patented* Lake And Walker Knife Safety (LAWKS®), which effectively turns the folders into fixed blades when actuated. When open, with LAWKS actuated, it offers the strength, rigidity and safety of a hilted fixed blade. Release the LAWKS lever, release the locking liner, and it folds to an easily carried length. You have the advantages of a fixed blade without the disadvantage of a costly sheath carry system.