8K82-M/KM Briz-M

All rockets are built for RSS(Real Solar System)

Thanks @KirRu for the rocket,@yakinikuumai for the DM-03 and @DeltaEntropy for the Briz-M @
RedstoneAerospace for the DFH-4 Space bus and@pencil for the HS-601 Space bus

Of course, the so-called Proton-M is an improved model of Proton K made by Russia at the end of the last century and the beginning of this century.

For Proton M, there have been four improvements in total, but some of their data are blurry and not easy to view, but I still made other versions.
Proton K(First stage RD-253Eng) Block DM:
https://www.simplerockets.com/c/MIwZP8/8K82K-Block-DM
Proton K(First stage RD-275Eng) Briz-M:
https://www.simplerockets.com/c/uR1Ma0/8K82K-Briz-M

（The following versions use RD-275M/276 engines）

Proton M basic model Briz-M long fairing:
https://www.simplerockets.com/c/d1VWH9/8K82KM-Ph0-PLF-13200
Proton M basic model Briz-M Short fairing:
https://www.simplerockets.com/c/U6rv68/8K82KM-Ph0-PLF-11600
Proton M Block DM-03:
https://www.simplerockets.com/c/TbU4JV/8K82KM-Block-DM-03
Proton M Briz-M Ph3 13m fairing:
https://www.simplerockets.com/c/jN23q3/8K82KM-Ph3-PLF-BR-13305
Proton M Briz-M Ph 3 15m fairing:This one

When using the Briz-M launch, the Proton rocket will still have about 800 to 200 m/s Δ/V left after the partial burnout to enter orbit. Don't worry, continue to use the Briz-M engine for flight. All versions of them can guarantee a minimum of 5 tons of payload into orbital synchronous transfer orbit.

Because the Briz-M upper stage engine has a small thrust, if you want to use it to launch to geosynchronous transfer orbit or synchronous orbit, completing the mission directly with one ignition may cause serious orbital inaccuracy, so I recommend completing the mission in 5 ignitions:
First ignition: put the payload and upper stage into low-Earth orbit
Second ignition: raise the apogee to about 5,000 kilometers
Third ignition: raise the apogee to about 20,000 kilometers
Fourth ignition: raise the apogee to about 35,786 kilometers
Fifth ignition: raise the perigee and reduce the orbital inclination
Just like in a real launch

Of course, it's just a suggestion.