Latest version of the venerable rocket, which has been subject to several incremental upgrades, is Proton-M Enhanced; it has a lifting capability of 6,150 kg to geostationary transfer orbit. For use as Proton's upper stage, Khrunichev produces Briz-M, which first flew in 2000.
The most recent version of the well-established rocket, which has received several minor upgrades, is Proton-M Enhanced; it can lift 6,150 kg to geostationary transfer orbit. For use as Proton's upper stage, Khrunichev produces Briz-M, which made its first flight in 2000.