First two figures are officers in m/23 uniforms and m/23 hat. The first has a pistol while the second has a sabre in his hand.
The third figure has a light machine gun. He got a m/23 uniform and a m/21 (high) helmet. The light machine gun is a kg m/21, it is very similar to the BAR1918. Kg stands for "Kulsprutegevär", literally "Bullet spraying gun".