Credit for the shell Ejecting Mechanism goes out to "TheDunkis" of Instructables. Took me only 2 days to think it over (Play alot of WoW I do). it holds 9 rounds. The ammo pusher has no picture so make it from what you see. My Camera is crap so bare with me.

Step 1: Piece Count

These are the required pieces to make this.

Step 2: Step 1: Body

pic 1: Construct This.
pic 2: Examine.
pic 3: Construct.
pic 4: add and Construct.
pic 5: another angle of pic 4
pic 6: Another angle of pic 4 and 5
pic 7: Completed Body

Step 3: Step 2: Magazine

The Magazine is pretty easy to construct.

Step 4: Step 3: Barrel

pic 1: required pieces
pic 2: left side
pic 3: right side

Step 5: Step 4: Trigger

I forgot to add pictures on where the handle and trigger go but bare with me.
Pic 1: required pieces
Pic 2: required
Pic 3: Trigger also Required
Pic 4: Construct
Pic 5: Finished zone

Step 6: Step 5: Put It All Together

Now to put what you built all together.

Pic 1: Put Magazine in body this way
Pic 2: Magazine in Body. (other side)
Pic 3: Put the barrel in this way.
Pic 4: Barrel in Body
Pic 5: Put the Trigger in this way.
Pic 6: Finished Model. Ram Rod put in.