Authors Note:

So I just found out that my earlier assumption was correct. The pistols in the game were NOT Berettas, but were in fact a variation of the M1911s. Why I thought they were Berettas was because the guns in the game had a magazine with a capacity for 15 bullets, minus the one in the chamber (the M1911 has a standard capacity of 8 bullets, minus the one in the chamber).

As of now, I'm still not sure which variation the pistols are. My friend was the one to say they were actually M1911s, but were of a different model than the Colt ones. If anyone knows which model it actually is, I would be most glad to hear it.