Your search for "defcon operator" revealed the following:

Defcon Ultra Lite Axis Lock Black G10 Folding 14C28N Wharncliffe Pocket Knife 012FBK

Defcon Ghost Button Lock Black Aluminum Folding Sandvik 14C28N Pocket Knife 016BK

Defcon Tier2 Button Lock Red Aluminum Folding Sandvik 14C28N Pocket Knife 015RD

Defcon Neo Shilin Tactical Linerlock Black G10 Folding 14C28N Knife 009FBK

Defcon Artifact Axis Lock Black & Purple Carbon Fiber Folding 14C28N Pocket Knife 24CFPP

Defcon Neo Shilin Tactical Linerlock Black & Red G10 Folding 14C28N Knife 009FRD

Defcon Warhawk Button Lock Black Micarta & G10 Folding 14C28N Sandvik Pocket Knife 020BK

Defcon Black Carbon Fiber/Silver D2 Steel Fixed Blade Knife w/ Sheath 0007BK3

Defcon Axis Lock Red Aluminum Folding 14C28N Sandvik Pocket Knife 023RD

Defcon Delta Button Lock Black Aluminum Folding Sandvik 14C28N Pocket Knife 017BK

Defcon Ultra Lite Axis Lock Black G10 Folding 14C28N Clip Pt Pocket Knife 010FBK

Defcon Artifact Axis Lock Blue & White Resin Folding 14C28N Pocket Knife 024BLWT

Defcon Artifact Axis Lock Green & Gold Resin Folding 14C28N Pocket Knife 024GNYL

Defcon Axis Lock Black Aluminum Folding 14C28N Sandvik Pocket Knife 021BK

Defcon Artifact Axis Lock Blue & Gold Resin Folding 14C28N Pocket Knife 024BKBL

Defcon Axis Lock Tan Aluminum Folding 14C28N Sandvik Pocket Knife 023DC

Defcon Artifact Axis Lock Black & Green Carbon Fiber Folding 14C28N Pocket Knife 024CFGN

Defcon Tier2 Button Lock Green Aluminum Folding Sandvik 14C28N Pocket Knife 015OD

Defcon Condor Framelock Black & Copper Folding Bohler M390 Pocket Knife 9400- On Sale