Historical Note:

The M3 Se-Ko-No was an SPAA, designed around the chassis of an M110 Reconnaissance Vehicle, the thing is that a 4 Stinger Missiles, a 35mm single Oerlikon gun, 1 Hydra 70 rockets, and a LAV-AD FCS, the thing looked like an LAV-AD from USA, but the difference is that the Chassis and Turret, while both serve an AA Purpose, they vastly different from another, the WGSDF actually held a Competition for the Mobile Air Defense Systems or in other words, it is simply called as MADS.

Info:

Main Gun: 35mm Oerlikon Autocannon

Secondary Weapon: 4x FIM-92 Stinger

Coaxial MG: 12.7mm M2 Browning

Shells: 35mm M261 (HEFI-T-APDS-HEFI-T), 35mm M414 (APFSDS-APFSDS-AP-I-T)

Special Weapons: Hydra 70 Air-To-Surface Rockets