Self-Defense Marine Martial Arts - Rolling Knee Bar
Human Weapon:

Self-Defense Marine Martial Arts - Horizontal ButtStroke
Human Weapon: This video tutorial shows you how to do an Horizontal Butt Stroke. Almost Identical to the Buttstroke of Krav Maga, But they didn't mention anything.. They did however combo it with a slash and thrust, so that was a difference.

Self-Defense Sambo - Leg Sweep
Human Weapon video tutorial: Leg Sweep or leg trip refers to a technique in which the combatant performing the leg trip uses his or her own leg(s) to off-balance an opponent, hence causing the opponent to fall to the ground.