What type of arms are mentioned as being used by volunteer security forces?

The reference to "small arms" as the type of arms used by volunteer security forces aligns with the typical capabilities and operational needs of such groups. Small arms generally encompass weapons like handguns, rifles, and shotguns that are portable and can be handled by individuals or small teams. These weapons are often most practical for volunteer security forces that need mobility and ease of use when operating in diverse environments, including urban settings or community defense scenarios.

In contrast, heavy artillery, biological weapons, and nuclear weapons are not commonly associated with volunteer security forces. Heavy artillery typically requires extensive logistical support and is used in large military operations rather than by smaller units. Biological and nuclear weapons are highly sophisticated, regulated, and dangerous forms of arms that are not available to or used by volunteer security groups, as they would exceed the capability and intent of such forces focused on local security and protection. Hence, small arms remain the relevant and appropriate choice concerning the arms used by volunteer security forces.