Lego Magnum rubberband gun
This is my very first instructable, so if I make a mistake, please give me advice! It took about a week to put all these MLCAD steps together. Please email me if you would like to know what programs I used to make these instructions.
NOTE: it took me probably a half an hour to upload all these steps because the instructables browser to upload images only lets you upload 1 pic at a time!!!

Technically it's more of a sniper gun than a pistol...I guess you could call it a sniper-pistol. The sights are pretty accurate, but not 100% of the time. I've also added a few additions to it like a laser pointer, and a tri-pod. It's a very, very simple trigger mechanism that I figured out one night when I was moderately bored. I have only gotten it to hold about at max 2-3 rubberbands on it. (I know, It jams if I put any more on.)

I have pics and a video of my gun on.

Step 1: Building the Magnum

These are the steps and the bill of materials for the Lego gun. Make sure you have everything for it!
There's a toooooon of steps, 113 steps to be exact. Some of the pictures are a bit blurry. Please be patient while building this!

Step 2: Building the Magnum (cont.)

Step 3: Building the Magnum (cont.2)

Step 4: Building the Magnum (cont. 3)!

Step 5: The Final Product!!!!!!!!!!!!!!!!!!!!!:) (almost)

Once you have the gun done, the next step will show you how to put the rubberbands for the trigger on. I'll also show you how to load, aim, and shoot.

Step 6: Adding the Rubberbands on the Trigger and Loading, Aiming, and Shooting

1st pic: first, take off one of the bent beams on the trigger

2nd pic: put the rubberbands to the axle on the elbow of the bent beam

3rd pic: put the other bent beam back on, and stretch the rubberbands onto the black ball-tipped pegs

4th pic (to load): put a rubberband onto one of the gear teeth on the gear

5th pic: stretch the rubberband over the top piece of that one brick that has 2 teeth-like things sticking out of them

6th pic: line up the sights under your target and......SHOOT!

Step 7: Making the Laser Pointer Holder

1st step: replace one of the plates on the bottom of the barrel with 2 2x4 plates or 1 4x4 plate
2nd step: place the laser pointer on top of the plates or plate that were added to the barrel
3rd step: secure the laser pointer down with tape
4th step: put 2 1x4 bricks on each side of the laser pointer (and you may want to put clay around it to secure it even more like I do)
final step: connect the 2 1x4 bricks by placing a 1x4 plate across them