Go to split screen mode and select Free-For-All. Have one player choose the Marksman combo (includes the R700 rifle and M9 pistol). Have another player select the War Fighter combo (includes the G36C rifle and the G3 rifle). Have the player with the War Fighter combo kill the Marksman. Take out your G3 and trade it for the R700. If the person has shot a few rounds it will be refilled to the maximum. The R700 holds 32 bullets per round. If you shoot one clip, go back to the body and it will refilled again.
