How to Remove a Mossberg 500 Stock (4 Steps)

Check that the shotgun is unloaded by placing the safety and the 'on' position, pressing in the slide release (located next to the trigger housing), and opening the action by pulling back on the fore-grip.
Use a standard size Philips head screwdriver to remove the screws holding the butt-plate (the rubber pad on the end of the stock) in position and remove the butt-plate.
Look down the exposed hole on the rear of the stock and determine the bolt head configuration (some Mossberg models have a slotted head and some utilize a 1/2-inch hex head).
Use your standard screwdriver or your Allen wrench (depending on which configuration you found) and remove the bolt by rotating it counter-clockwise. The stock will now come off the receiver.

How to Remove an SKS Stock (10 Steps)

Flip the switch on the right side of the rifle to a vertical position and pull the pin outward.
Remove the receiver cover and buffer assembly by gently pulling backward.
Pull the charging handle back to remove both the bolt assembly and the charging handle.
Turn the rifle upside down and set it on a smooth surface.
Use a Phillips screwdriver to press down the button behind the trigger loop. This will cause the trigger assembly to pop up. Be careful: The trigger assembly is spring-loaded.
Turn the rifle over and lift the barrel assembly out of the stock.
Flip the lever in front of the rear-sight post to release the gas tube assembly.
Remove the gas piston.
Using a small nail or hole punch, push the retaining pin out of the back of the rear metal cover of the handguard.
Remove the wooden handguard. You can now attach the new stock.

How to Paint Stock Cabinets

Wipe down the stock cabinets with liquid deglosser and a rag. Stock cabinets come prefinished with a slick exterior, and this glossy coating doesn't accept paint easily. Don't sand a stock cabinet exterior, as many feature thin veneers that are easily damaged. Liquid deglosser should be all you need to make the surface matte enough for paint coverage.
Remove the cabinet hardware, including the hinges. Most prefabricated cabinetry hardware is removable with a screwdriver.
Place loose doors and drawers on a plastic sheet for easier painting.
Stick painter's tape to wall surfaces and countertops in case of stray brush strokes.
Apply general-purpose primer to the cabinets, doors and drawers. Use a synthetic-bristle paintbrush for more precise control around edges, and use a medium-nap roller for larger cabinetry surfaces. Wait for the primer to dry before proceeding. Some general-purpose primers take up to 12 hours to dry, so you should consult the primer's container for the manufacturer's recommended drying times.
Paint the cabinets, doors and drawers, using high-gloss oil-base paint. Glossy finishes are easier to keep clean, a very important feature for kitchen and bathroom spaces. Use a natural-bristle paintbrush for tight spaces and a new medium-nap roller on the main expanses.
Apply a second coat of paint once the first coat dries, usually in two to three hours.
Remove the painter's tape, reattach the hardware and reinstall the drawers after the second coat has dried for at least 24 hours.