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Knex rocket launcher K.P.R.L. (Koenykoen's portable rocket launcher)by koenykoen
Ultimate K'nex Grenade- With Pin!by The Knexpert
Knex RPG (rocket launcher)by Doc Penguin
K'NEX Rocket Launcherby nerfrocketeer
Knex War Bombby I_am_Canadian
The F-1 Lego Grenade + Rocket Projectile Launcherby Bitterberry9
K'nex True Trigger Grenade Launcher: TCEGL29by ArceusX0
K'nex Roman Candle Shooter: The Caesar Shooterby nerfrocketeer
Knex Pansershreckby KnexFreak360
Under Barrel Grenade Launcher for the MARby Masterdude
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