Just click the flag to fire. For add-ons, click on them; click on the add-ons again to detach them. Use all the add-ons to make the gun look like an epic Revolver Sniper. ;D
There will be more or less add-ons so don't worry. ;) You may request for add-ons. "Saw" has been removed. :( Sound FX added. "Pad" added. "Magnet" added. "Balancer" edited. "Magnet" edited.