Possession of instruments of crime is a charge for having tools, devices, or ordinary objects that prosecutors say you intended to use to commit a crime. The item itself is often legal to own. What makes it criminal is the proof that you meant to use it unlawfully. Depending on the state, the same conduct may be labeled possession of burglar tools, possession of instruments of crime, or criminal possession of a weapon, and penalties run from a few months in jail to several years in prison when a firearm or serious planned offense is involved.
What Qualifies as an Instrument of Crime
The items that trigger these charges fall into two groups. The first is anything specially made or adapted for criminal use and has no plausible lawful purpose: a shaved key cut to defeat a specific lock, a shim built to bypass handcuffs, a credit card skimmer designed to capture account data. Possession of this kind of item is damning on its own because the design points to the crime.
The second group is where most charges actually live. Ordinary objects like screwdrivers, crowbars, bolt cutters, pry bars, and flashlights become instruments of crime when the circumstances don’t match any legitimate use. A flathead screwdriver in your garage is a tool. The same screwdriver in your waistband at 3 a.m. outside a locked warehouse is evidence. The object hasn’t changed; the context around it has.
Modified everyday items draw sharper scrutiny. A baseball bat wrapped in barbed wire or a screwdriver ground to a point is treated much more like a weapon than a tool. When the instrument is a firearm or a designated weapon carried in connection with a planned offense, most states grade the charge far more seriously, often moving it from a misdemeanor to a felony.
Intent Is the Whole Case
Owning lock picks, carrying a pry bar, or having bolt cutters in your truck is not inherently illegal. The charge only attaches when the state can prove, beyond a reasonable doubt, that you planned to use the item to commit a specific crime. Without that proof, the case falls apart. This is why so many weak charges collapse before trial.
Direct proof of intent is rare. People don’t announce their plans, so prosecutors build intent from circumstantial evidence. Time of day matters: 2 a.m. outside a closed jewelry store reads differently than noon. Location matters: standing next to a construction yard fence with wire cutters tells a different story than walking through a hardware store parking lot with the same cutters. Concealment weighs heavily, especially tools hidden in a modified jacket lining or taped to the body, because hiding something suggests you knew it needed hiding. Prior convictions for burglary or theft add weight. Text messages discussing a planned break-in can end a case on their own.
The intent requirement is the main shield for tradespeople and hobbyists. A locksmith with a full pick set, an electrician with wire strippers at a job site, a mechanic with slim jims in the shop — none of them is in jeopardy without something tying the tools to a crime.
States That Shift the Burden
A handful of states give prosecutors a shortcut. In those jurisdictions, possessing certain tools adapted for burglary creates what the law calls prima facie evidence of criminal intent. Once the state proves possession, you have to offer a reasonable explanation. Being a licensed tradesperson working out of your established shop is a recognized answer in some of these states. Others carve out law enforcement officers but leave locksmiths and contractors to build their own defense from the circumstances.
You Don’t Have to Be Holding It
Possession comes in two forms, and both can support a charge. Actual possession is simple: the item was on your person or in your hands. Constructive possession reaches further. It covers items you weren’t physically carrying but knew about and could control, like the trunk of your car, a storage unit you rent, or a room in your apartment.
Constructive possession requires both knowledge and control. Being near the item isn’t enough. If someone else’s lock picks turn up in a car you borrowed, prosecutors need evidence that you knew they were there and had some dominion over them. This distinction matters in shared apartments, vehicles with multiple occupants, and workplaces where several people access the same storage.
Penalties
Grading varies widely by state and by the type of instrument involved. The same conduct can be charged as a low-level misdemeanor in one jurisdiction and a felony in another.
- Basic possession of burglar tools is usually a misdemeanor. Sentences range from a few months to one year in jail, with fines that can reach several thousand dollars. A federal Class A misdemeanor carries up to one year in prison and a fine of up to $100,000 for an individual.
- When the instrument is a firearm or a designated weapon, or when possession ties to a serious planned crime, the charge frequently escalates to a felony. State felony sentences can mean several years in prison, and federal law authorizes fines of up to $250,000 for felony offenses.
- A deadly weapon finding can trigger enhancements, bumping a third-degree felony to a second-degree felony or converting a misdemeanor into a felony, and adding mandatory minimum time before parole eligibility.
Beyond jail and fines, courts routinely add supervised probation, community service, and restitution. Probation brings monthly supervision fees along with curfews, travel restrictions, and mandatory check-ins.
These charges rarely come alone. Prosecutors typically stack possession alongside the underlying offense the tools were meant to facilitate: attempted burglary, criminal trespass, theft. You can face separate convictions and consecutive sentences on both. Even where the planned crime wasn’t completed, the attempt charge paired with the instruments charge can add up to far more punishment than either alone.
What a Conviction Does to the Rest of Your Life
The sentence is often the least disruptive piece. The consequences that follow can last for years.
Firearm Rights
Federal law prohibits anyone convicted of a crime punishable by more than one year of imprisonment from possessing a firearm or ammunition. If your conviction is graded as a felony, or as any offense where the maximum possible sentence exceeds one year, you lose your federal right to own or possess guns no matter what sentence the judge actually imposes. A misdemeanor conviction generally does not trigger the federal firearm ban unless it qualifies as a misdemeanor crime of domestic violence involving physical force against a family member or intimate partner.
Professional Licensing
Licensing boards in many occupations require applicants to show good moral character, and a conviction for possessing instruments of crime can trigger denial, especially in fields involving trust or security such as locksmithing, private investigation, alarm installation, and general contracting. The tools that define your legitimate trade can become the basis for a charge that ends your ability to practice it.
Most states now require boards to consider whether the conviction is directly related to the duties of the profession rather than imposing blanket bans. Boards weigh the seriousness of the offense, time passed since the conviction, and evidence of rehabilitation. At least two dozen states let applicants petition a licensing board for a preliminary determination of eligibility before investing in training or education.
Employment and Housing
Outside licensed professions, a criminal record on a background check can still cost you a job offer or an apartment. A conviction for possession of instruments of crime raises particular concern for positions involving access to buildings, equipment, or inventory, which are the same contexts where these charges arise.
Defenses That Actually Work
The strongest defenses attack intent, because without intent there is no case.
Legitimate Purpose
If you can show the items had a lawful reason for being with you, the prosecution’s theory falls apart. Employment records, a business license, work orders, and testimony from an employer that you use the tools professionally can be decisive. A plumber with pipe wrenches, a mechanic with slim jims, a locksmith with pick sets — the more documentation you produce, the harder it becomes to argue criminal intent.
Challenging Constructive Possession
When the tools weren’t on you, attack the knowledge-and-control theory. In cases involving borrowed vehicles, shared apartments, or communal workspaces, the link between you and the items may be too thin. Courts have rejected constructive possession findings where a firearm was discovered in a borrowed car and the prosecution couldn’t establish that the borrower knew it was there.
Insufficient Circumstantial Evidence
A case built entirely on circumstances is vulnerable to the argument that those circumstances are equally consistent with innocence. Standing near a closed business with a screwdriver in your pocket could mean you just left a job site. Time and location are suggestive, not conclusive. When the state’s case stacks inference on inference rather than offering direct evidence, reasonable doubt becomes a realistic argument.
Getting Seized Tools Back
If law enforcement takes your items as suspected instruments of crime, recovery is not automatic, even if charges are dropped or you’re acquitted. The government can pursue civil forfeiture, a separate proceeding brought against the property itself rather than against you. Federal civil forfeiture generally requires a warrant, with exceptions when the seizure happens during a lawful arrest or search, or when a state agency transfers the property to a federal one.
If property is seized federally, you can file a petition for remission or mitigation asking the government to return it. The petition must be filed within 30 days of the last date of publication on the government’s forfeiture website or by the deadline in your personal notice letter. You describe your interest in the property, explain why it should be returned, and sign under penalty of perjury. You don’t need a lawyer, but the petition must be honest: false information can bring separate federal criminal charges.
State forfeiture procedures vary. Many states now require a criminal conviction before the government can permanently keep seized property, but this is not universal. When the seized items are the tools you need for work, the financial hit can rival the criminal penalties themselves.