Barrett Firearms.
About 14 kilogramms. It is 1.14m long.
Depends on which .50 cal, and which cartidge. If you mean a Barrett Model 82A1 sniper rifle, in .50 BMG, standard ball ammo is ABOUT 2800 fps.
the 50 cal has 10 and the intervention has 5
5.8 feet
No. The .50 AE is 33mm in length. The .50 Browning Machine Gun rounds, as used in the Barrett, are 99mm in length. Very substantial difference.
see the link below
Internet, MidWay USA, Barrett
No Some are. Which model Barret?
Just under 8000 feet.
50-150
No more than 50