This is a great starter pack for those looking to add some realistic SFX to their shooting games.

You can check out a demo here
Demo Game
(Note: the entire mini-game and all of its assets/code is included in this package)
Included are particle systems and sounds for the following effects:
Bullet Impacts:
1) Concrete
2) Dirt
3) Flesh / Blood
4) Foliage
5) Glass
6) Metal
7) Paper
8) Plaster
9) Plastic
10) Water
11) Wood
12) Mud
13) Stone
14) Brick Red
15) Sand

Three different muzzleflash effects:
-Generic muzzleflash
-Starshaped muzzleflash (for four ported flash hiders)
-V-shaped muzzleflash ( for two ported flash hiders)
-A really nice explosion effect (can never have too many of these