Your search for "defcon operator" revealed the following:

Defcon Operator Button Lock Green Aluminum Folding Sandvik 14C28N Pocket Knife 013OD

Defcon Operator Button Lock Black Aluminum Folding Sandvik 14C28N Pocket Knife 013BK

Defcon Operator Button Lock Desert Tan Aluminum Folding Sandvik 14C28N Pocket Knife 013DM

Defcon JK Series Fulcrum Lite Leverage Lock Black Folding 14C28N Pocket Knife 6010BK

Defcon Artifact Axis Lock Black & Copper Resin Folding 14C28N Pocket Knife 024BKCP

Defcon Black Fang Button Lock Orange & Black G10 Folding MagnaCut Knife 1002OGBK

Defcon Valkyrie Framelock Yellow Titanium Folding M390 Knife 93931

Defcon Delta Button Lock Gunmetal Gray Aluminum Folding Sandvik 14C28N Pocket Knife 017GY

Defcon Axis Lock Dark Red Aluminum Folding 14C28N Sandvik Pocket Knife 021PP

Defcon Black Fang Button Lock Yellow & Black G10 Folding MagnaCut Knife 1002BKYL

Defcon Black Fang Button Lock Purple & Black G10 Folding MagnaCut Knife 1002PPBK

Defcon Neo Shilin Tactical Black G10 14C28N Sandvik Fixed Blade Knife 009

Defcon Fulcrum Leverage Lock Gray Titanium Folding Bohler M390 Knife T9617

Defcon Revive Tactical Linerlock Black G10 Folding 14C28N Pocket Knife 004F2

Defcon Tier2 Button Lock Black Aluminum Folding Sandvik 14C28N Pocket Knife 015BK

Defcon Black Aluminum Pivot Lock 14C28N Folding Knife 022bk

Defcon Ultra Lite Axis Lock OD Green G10 Folding 14C28N Wharncliffe Pocket Knife 012FOD

Defcon Warhawk SP Button Lock White PEEK Folding Damascus Pocket Knife 020WT