The Special Forces 14SF models share a unique design offering a combination of Carson M16 Series features requested by military procurement specialists. The dual grind Tanto 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. Automated Liner Safety. Triple Point™ Serrations. Dual Hilt Blade Guard w/ Aluminum Handles.