Animating Weapons for Counter-Strike Source/Editing Attachments

Setting Up

Open the QC file and HLMV.
In HLMV go to File>Load Model.
Select the folder weapons and then select the file v_rif_sg552.mdl. (You may select a different model depending what you are animating.)
Load the model.
In the render tab on the bottom, uncheck everything except Enable Overbrightening.

Note:
Any time you click in the 3D space of HLMV, there will be a dotted circle.

Dragging left click in the circle will affect the pitch and yaw of the model.
Dragging left click out of the circle will affect the roll of the model.
Holding onto SHIFT and dragging left click will pan the model around.
Holding onto CONTROL and dragging left click will pan the light source around.
Dragging right click either outside or in the circle will zoom the model in and out.

Click the Attachments tab on the bottom of HLMV.
On the left box, select the attachment 1. This is the muzzle flash.
On the right box, attach the attachment to ValveBiped.Frame.
Under the translation box, enter some values and experiment with where you want to place the muzzle flash. Do not use the rotation parameter.
Once you have found the position, HLMV will tell you what the QC line of code should be. Copy and paste it while replacing the old $attachment line.
On the left box, select the attachment 2. This is the shell ejection vector. (Where the shells fly out after you fire the gun.)
On the right box, attach the attachment to ValveBiped.Frame.
The x axis (red) is the direction in which the shells will fly out.
Change the translation so the attachment is centered on the shell ejection port.
Once you have found the position, HLMV will tell you what the QC line of code should be. Copy and paste it while replacing the old $attachment line.
Save the QC file.

Animating Weapons for Counter-Strike Source
Shoot Animation	Editing Attachments	Draw Animation