1[with object]To dismantle or disassemble (a firearm or other piece of equipment), especially as one would in the field rather than in a workshop, etc.
2[with object]Informal (originally and chieflyMilitary ). To shred (the butt of a cigarette or cigar), usually so that the pieces can be disposed of without leaving evidence of one's passing.
Origin
1920s; earliest use found in The Boston Globe. From field + strip.