Paint the gun to match the essence you wish to display. Brush a full layer of firearm finish to the stock, forestock and butt of the rifle. Select a black firearm finish to give the rifle a sense of stealth. Choose finishes with colors and shades of green and brown to create a military camouflage.
Add hardware to your rifle. Clasp a scope onto the top of the barrel to give the firearm a feel of a sniper rifle. Change out a standard magazine with a longer, extended design -- such as a drum, rotary or zigzag style. Extended magazines boost the appeal of the rifle and offer the feeling that the weapon is used by military soldiers or gangsters.
Create an appealing holster for your rifle. Paint or draw emblems onto the holster indicating to the audience, for example, that the rifle belongs to a federal agent or bounty hunter. Make letters and insignias bright enough -- blaze orange or yellow, for example -- for the camera to pick up all necessary logos.