How should the inside of the forearm be struck in NDF techniques?

Striking with an empty hand when targeting the inside of the forearm in non-deadly force (NDF) techniques is the correct approach because it allows for a controlled application of force that minimizes the risk of causing severe injury.

Using an open palm ensures a broader impact area, distributing the force across a larger surface. This technique is often utilized for defensive tactics because it can effectively disrupt an opponent's movement or weapon control without the serious consequences that come from using a fist or knuckles, which could inflict greater damage or lead to unintentional injuries. The palm strike can also be employed in a tactical context to create an opportunity for follow-up actions or escapes.

Employing a knuckle or fist for such a strike might increase the potential for injury to both the individual delivering the strike and the subject being struck, as those areas are more concentrated and rigid. Additionally, using an empty hand aligns with the principles of using the least amount of force necessary to gain compliance or control in a defensive situation, which is a key consideration in law enforcement practices.