Knex Interchangable Parts Gun Model

my brother tried to create his own knex gun model but failed. i took his design, added a trigger, stalk, barrel, and clip. i took it all apart again and discovered that it still looked sweet with different combos of parts. it doesnt shoot anything but i think you will like it for pretend gun fights or anything else.

a few of my favorite part combos

the "main" part to all the gun combos... and the pistol on the first step

a longer barrel
(obviously)
this part might be a bit hard
if you have any ?s, please ask

drum clip for fun reloading action. yay!
just layer the parts as shown

base layer, gray spacer, base layer, gray spacer ,base layer
that's all there is to it

futuristic hand guard doohickey
very simple

if you have any ?s for me about the gun, please leave a comment below.