Okey, this is a very simple gun, wich is made just for showing people how-to-use-a-spring-in-a-standard-block-trigger-gun.

shoots a fine 40 feet (with my spring)

If your just going to post something similar to stop posting this becuase its a block trigger, don't, i will come to you and haunt you (A).
This gun also can use some standard rubber bands, but i dont suggest it.

alty

Step 1: Gather Your Parts!

get yourself:
1 spring, about 1 cm diameter and about 7 cm long.

1 rubber band, fo rthe auto cocking, as small as possible (even those tiny little half a centimetre ones will do!)

1 ball joint connector

2 blue rods
5 yellow rods
4 white rods
3 green/black rods
2 red/tan rods
2 grey/black rods

12 yellow connectors
4 white connectors
11 green connectors
2 red connectors
6 light gray connectors
24 dark gray connectors

Step 2: Make the Handle

i know its crap, i just used it because its simple, sturdy, squizeable and connectable to this gun!
the pics should be easy enough, if not, you really need to ges some glasses (or put them on).

Step 3: Create the Ram Rod

the pic should be lear enoug, just two yellow rods with a white one in between, spring slided over one side of the ram, and finally two white rods for cocking.

Step 4: Make the Body

just follow the pictures, i think they are clear anough.

Step 5: Two Little Pieces

this is just a blue rod with a grey (1 slot) connector clipped on it, and put it in the clone machine.

Step 6: Mounting in the Ram Rod

this may sound very easy, but maybe can be a little harder than you might think, the pictures will clear it up :)

Step 7: Connect the Handle.

just connect the two yellow rods to the two rd rods, on the back o fthe gun, dont forget to put the pieces od two steps before on it before adding the handle :).

Step 8: Rubbering, Loading, Aiming and Firing!

add one rubber band to the trigger, and then wrap it around the front handle.

to load, put you left thumb on the red connector on the back of the gun, then take the two white pieces on the ram with oint and middle finger, pull back untill you hear the lovely "click" stick a rod in the front and then hold the handles, put your left thumb on the trigger, put your face near the back of the gun, aim and shoot!