By A Mystery Man Writer
Knex Pistol No Rubber Bands: rubberbandless knex pistol
Fold Up Knex Rubber Band Gun Prototype - Instructables
K'nex paper firing crossbow (simple and effective)
Knex Pistol With True Trigger and Cocking Mechanisms - Instructables
Tiny K'nex Pistol : 3 Steps - Instructables
How to build a good knex rubber band gun, guide!
How to make a KNEX working and powerful gun
Knex Rubber Band Gun Pistol : 4 Steps - Instructables
The K'NEX WASP (War Assault Semi-automatic Pistol, made by
K'nex Semi-auto Rubber Band Gun : 6 Steps - Instructables