A firearm is generally a rifle, pistol, shotgun, or other portable weapon that expels a projectile (bullet) by use of an explosive action. The definition of a firearm may vary from state to state under state statutes—and under federal statutes—and related items such as a muffler or silencer may be included in the definition of a firearm for purposes of certain criminal offenses (crimes).
In New Mexico (NM), the definition of a firearm typically aligns with the general description provided: a weapon that expels a projectile by the action of an explosive. This includes rifles, pistols, shotguns, and other portable guns. State statutes may have specific definitions that apply to various legal contexts, such as possession, transfer, and use of firearms. Additionally, under federal law, the definition of a firearm also includes certain firearm accessories such as mufflers and silencers. These items are regulated by the National Firearms Act (NFA) and the Gun Control Act (GCA). In New Mexico, as in other states, owning a silencer or muffler is legal if the owner complies with federal regulations, which include registering the device and undergoing a background check. It's important to note that both state and federal laws can impose restrictions and criminal penalties for certain offenses involving firearms, and these can include enhanced penalties when a firearm is used in the commission of a crime or when the firearm itself is illegal, such as an unregistered silencer.