This started life as idea for a everyday crossbow but over time it started to turn in to a simple rifle powered by a crossbow mechanism.

Step 1: The Main Frame

Make these parts 3 parts

Step 2: The Stock

Make the stock

Step 3: The Trigger

Make Both of these parts

Step 4: The Cross Beam

Make the crooc beam for the end of the gun.

Step 5: Put It All Together!

just put all the parts together as in the picture any questions please comment.

Step 6: Loading and Shooting

This gun will fire both bolts the headed one goes smother but not as far.
To fire just pull the bolt back till it is over the trigger it should lock in to place.
Just pull the trigger to fire.