Not all my receivers have the umbrella logo so it's ok to suggest 2 different colors of red. I assume flat white is standard?
Putting this in general as I have pistols & SBR's to be painted as well.

Youtube Tutorial Painting a AR15 Receiver
Currently looking at:
Model Masters
Insignia Red FS31136 - Flat 170508
Russian Marker Red - Flat 2127
Rot RLM 23 - Semi-Gloss 2073
White FS37925 - Flat 2142
Testors Enamel
Cherry - Flat 1197TT
Red - Flat 1150TT
Stop Light Red - Metallic 1105TT
White - Flat 1168TT


