What is frangible ammunition primarily made of?

Frangible ammunition is primarily made of materials designed to break apart upon impact to reduce the risk of ricochet and over-penetration. The correct choice, which states that frangible ammunition is primarily made of brass or copper dust, reflects the nature of these bullets. They typically consist of compressed metal powders, such as copper or brass, which are formulated to fragment when striking a target.

This design is particularly useful in training environments or scenarios where safety is a priority, as it minimizes the potential for injury from stray bullets. Conversely, lead with a copper jacket and full metal jacket rounds are designed to retain their shape and penetrate targets effectively, which does not align with the intended use of frangible ammunition. Solid lead bullets also do not provide the necessary safety features associated with frangible designs, as they are more likely to ricochet and cause unintended harm. Thus, the emphasis on the materials in frangible ammunition reflects its unique purpose and application in firearms practice.