9305.10 - Of revolvers or pistols:

This HTS category, 9305.10, specifically encompasses parts and accessories designed for revolvers and pistols falling under heading 9302. These items are essential components that contribute to the functionality, maintenance, or modification of these specific types of handguns. Examples include barrels, cylinders, frames, grips, firing mechanisms, and other associated components. The classification hinges on the item's direct relationship and intended use with revolvers or pistols.

It is crucial to distinguish this category from its siblings. HTS 9305.20, for instance, is reserved for parts and accessories of shotguns and rifles of heading 9303. Therefore, if a part is designed for a shotgun or rifle, it would fall under 9305.20, not this category. Similarly, other sibling categories would cover parts for different types of firearms. The primary distinguishing factor is the firearm type for which the part or accessory is intended.

Within the 9305.10.20 subcategory, further delineation is provided. This subdivision is specifically for parts and accessories of articles classified under heading 9302, which precisely covers revolvers and pistols. The existence of this subcategory allows for a more granular classification of these specific firearm components, ensuring accurate customs reporting and duty assessment.