What Is the Law on Brass Knuckles? Punishment? Defenses?

A lot of our clients with prior criminal histories (especially those who have been to prison), as well as younger clients, carry brass knuckles.  If one has ever been punched by someone holding brass knuckles, it definitely is worse than a punch from someone not holding them.  The knuckles are not always necessarily made of brass (they can be made of plastic or another metal), but they are generally still referred to as brass knuckles.

Some people like to use brass knuckles as a paperweight or as a belt buckle, but one should avoid doing so if the belt buckle can function as brass knuckles by one simply unhooking the buckle from the belt.

Merely having such knuckles when the possession is as a weapon in any way is illegal under Penal Code § 21810.  It is also illegal to sell or manufacture brass knuckles.  As part of the Realignment Act of 2012, all the weapons listed as illegal (including brass knuckles) under Penal Code § 12020, et. seq., were given their own new code section.  For example, Penal Code § 12022(a)(1) addressing brass knuckles, was renumbered as Penal Code § 21810.
Section 21810 is a "wobbler," meaning the offense can be charged as a felony with a maximum sentence of three years and a fine of up to $10,000 plus penalties and assessments that can total $42,500.  It can also be charged as a misdemeanor with a maximum punishment of one year in county jail and up to a $1,000 fine, plus penalties and assessments (total of approximately $4,250).  The decision on how to charge the offense will consider the facts of the case (the client’s age, how the discovery of brass knuckles was made, if anyone was injured, how the suspect cooperated with police), the suspect’s prior criminal history (especially as to gang affiliation and prior prison sentences) and any other factors relevant to how brass knuckles are prosecuted in the particular courthouse.
Probation is often possible, especially if the client has no prior history.  A felony sentence would be served in country jail, not state prison, unless the defendant is a registered sex offender, or has a prior conviction for a serious or violent felony listed in Three Strikes statutes.

Having brass knuckles is also illegal under Penal Code § 16590, under a list of “generally prohibited weapons.  Brass knuckles are listed at subparagraph (o).  Other weapons listed under section 16590 include an air gauge knife, ammunition that contains a flechette dart, ballistic knives, belt-buckle knives, a bullet containing or carrying an explosive agent, a cane gun, a cane sword, a nunchuku, a shobi-zue, a short-barreled rifle or short-barreled shotgun, a zip gun, a writing pen knife and a host of other ingenious weapons.

The defenses to possession of brass knuckles are primarily that what you had does not meet the definition of brass knuckles or that you were not aware that the weapon had such characteristics of brass knuckles.  These are tough arguments to make.  Less commonly, you may have a special permit for possession of the brass knuckles.  More commonly, however, one will try to suppress the discovery of the brass knuckles by arguing that it was found during an illegal search or there was some other police misconduct such as evidence planting.

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