Your search for "defcon gravity" revealed the following:

Defcon JK Series Gravity Framelock Black Titanium Folding M390 Pocket Knife 9313

Defcon JK Series Gravity Framelock Gray Titanium Folding M390 Pocket Knife 93131

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

Defcon Fulcrum Leverage Lock Gray Titanium Folding Bohler M390 Knife T9617

Defcon Artifact Axis Lock Blue Resin Folding 14C28N Pocket Knife 024BL

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

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

Defcon Recon Axis Lock Gray & Black Titanium Folding Pocket Knife 9132- On Sale

Defcon Artifact Axis Lock Black Carbon Fiber Folding 14C28N Pocket Knife 024CFBK

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

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

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

Defcon Atlas Framelock Gold Titanium Folding S35Vn Knife 53442

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

Defcon Tier1 Button Lock Black Aluminum Folding Sandvik 14C28N Pocket Knife 014BK

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

Defcon JK Mako Framelock Titanium S35Vn Folding Knife 52903

Defcon Artifact Axis Lock Red & Pink & Blue Resin Folding 14C28N Pocket Knife 024RDBL

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