RSI Polaris Missile Rack
Missile Rack RSI Size 10 MRCK_S10_RSI_Polaris_Side_MissileRack
This bespoke S10 mount for the Polaris holds a missile rack carrying eight S3 missiles.
In-game description, from the localisation file.
As stated by the game
Missiles8xS3
From the game files (global.ini) of the current build, as the upload tool read them, 2026-10-15.