Going to start posting publicly the sprites I make so people can re-use them on their personal projects.
If you open the file in Fireworks you can access the sprite layers and modify moving parts (magazines, bolts, etc.)
All my sprites are free for use on non-comercial projects. Doom related or not.
On this image, sprites for the M16, AK-47, M14 (can also be used as a M1-Garand), M60, RPD, Stoner, M1911, BAR 1911, China Lake, M-72, RPG, Flamethrower, DSHK, SKS, Ithaca, PPSH, and MAT-49.