S.e.r.e. 2020 G Series Folding Knife Liner Lock Spring Assist D2 58HRC Satin 3.6 in Combo G10 Black. 6 Blade is world renown as one of the strongest tactical folders in existence. Originally designed by Al Mar and Colonel Nick Rowe in the early 1980s for the U.S. Armys SERE school todays updated models are strongerand the most precisely crafted versions we’ve ever made. The SERE 2020 features black G-10 handle scales pillar construction flow through design and our left/right reversible Deep Carry Pocket Clip that provides discrete carry and delivers the kind of performance you need in the real world.