Not a Barret...

To be honest, I don't know what type of gun that was, but it was certainly not a Barret M82. The gun that those mercenaries used looked a lot like an M82, but look at the weapon a little more closely. The clip for the bullets is placed behind the gun's pistol grip and trigger, as in the "bullpup" rifle configuration. A real Barret has the clip placed ahead of the pistol grip and trigger. I think that it was just a made-up gun invented by the propmaster for this film. However, he might have used the shape of the Barret as a basis for his weapon, and built the prop weapons from real M82s'. As for the power of the gun, that's another question...

Right

Right!

Good. Most people wouldnt catch that, or just wouldnt care. Perfect nitpick!

barret

if it had the clip behind the grip then it is a barret M-95

Thanks

Thank you for correcting me. I'm pretty sure it is a M95. Or possible a specially made gun.