This isn't very accurate. The gun is the Colt M1911, not the Beretta M9. And the magazine holds 15 rounds, not 5.
Also, the model only barely represents the Colt in L4D. Plus the shot sound is inaccurate.
But I'm glad that you at least put some effort into making this. It's not a bad weapon, it's just not very close to the one in L4D.