Best California-Legal OTF Knives: The Under-2-Inch Guide

The Short Version

California allows automatic knives with blades under 2 inches and bans carrying, selling or lending the rest. That one line, from Penal Code 17235 and 21510, is the whole reason "California-legal OTF" is a category. TEKTO builds three automatics for it: the A2 Badger, an OTF with a 1.85-inch D2 blade in Tanto or Double Edge. The A5 Spry Mini, an OTF with a 1.85-inch S35VN blade in Drop Point, Tanto or Double Edge, and the A3 Delta Mini, a side-opening automatic with a 1.90-inch D2 drop point and a safety switch. All three carry like any pocket knife anywhere in the state outside schools, courthouses and airports. This guide covers the rule, how the blade is measured, what to look for in a small OTF, and how the three compare.

The 2-Inch Rule in One Paragraph

Penal Code 17235 defines a switchblade as a knife "having the appearance of a pocketknife" with a blade "two or more inches in length" that opens automatically by a button, pressure on the handle, a flick of the wrist, gravity or any similar mechanism. Penal Code 21510 then makes it a misdemeanor to carry a switchblade on your person, keep one in the passenger area of a vehicle in a public place, or sell, lend, transfer or give one to anyone. Read the two together and the rule falls out: an automatic knife with a blade under 2 inches is not a switchblade under California law at all, so it can be carried openly or concealed like any other pocket knife, bought in a store, shipped to your door and handed to a friend. An automatic with a blade of 2 inches or more cannot be carried, sold or kept in your car, and the statute reaches side-opening and out-the-front designs alike. Exactly 2.00 inches is on the wrong side of the line. "two or more" means two.

How the Blade Is Measured

Neither statute says where the ruler goes, and that is the question every California buyer asks. The reading that keeps you out of trouble is the longest one: measure from the tip of the blade to the point where it enters the handle, with the blade fully extended, and count the whole thing, sharpened or not. An unsharpened ricasso, a choil or a swedge still belongs to the blade in the eyes of an officer with a tape measure. On an OTF that means the exposed steel when the knife is fired, not the full length of the blade hidden inside the handle. Our published blade lengths are measured that way: 1.85 inches on the A2 Badger and A5 Spry Mini, 1.90 inches on the A3 Delta Mini, which leaves between a tenth and three-twentieths of an inch of margin. Be wary of any automatic advertised as "2 inch" or "CA legal 2.0": a blade that measures 2.00 is a switchblade in California, and a seller rounding 2.05 down to 2 has handed you a misdemeanor.

What to Look for in an Under-2-Inch OTF

A blade under 2 inches is not a compromise for most of what a pocket knife does in a day: boxes, tape, cord, zip ties, tags, a sandwich, a splinter. Where the small blade shows its size is in food prep and anything that needs a long slicing stroke, so if you want one knife for camp cooking, pair the OTF with a fixed blade. Within the category, five things separate a good small OTF from a disappointing one. Handle length, because a 1.85-inch blade on a 3.2-inch handle gives three fingers a grip and a shorter handle gives two. Double action, meaning the slide both fires and retracts the blade, which every TEKTO OTF has and some cheap small autos do not. Blade steel: D2 holds an edge well and is easy to sharpen. S35VN holds it longer and resists rust better. Blade shape: a drop point for everyday cutting, a tanto for a reinforced point that pries a staple or opens a can lid, a double edge for a symmetrical point. And the extras that matter in a small knife, a glass breaker and a clip that moves to either side, because a knife this size is carried every day and should carry well.

The Three TEKTO California-Legal Automatics

If you want the smallest and simplest, the A2 Badger. If you want the best steel and a drop point, the A5 Spry Mini. If you want a longer handle and a blade that swings rather than fires straight out, the A3 Delta Mini. All three are under the line with room to spare.

A2 Badger or A5 Spry Mini?

They share a blade length, a handle material, an ambidextrous clip and a glass breaker, and they weigh within a few hundredths of an ounce of each other, so the choice is steel and shape. The A5 Spry Mini runs S35VN at 60 to 62 HRC, which holds an edge noticeably longer than the Badger's D2 and shrugs off a damp pocket. It also offers the drop point, the shape most people want for everyday cutting. The A2 Badger runs titanium-coated D2, which sharpens faster and takes a keen edge, and its tanto is the pick if the point does prying work. The Badger is our best-selling knife for a reason: it is the one people buy first. The Spry Mini is the one they buy when they know what they want. Our A2 Badger deep dive puts the two side by side in more detail.

Where a Legal OTF Still Cannot Go

• K-12 schoolsPenal Code 626.10 lists the knives banned on school grounds: dirks, daggers, ice picks, blades over 2.5 inches, folding knives that lock and unguarded razors. A sub-2-inch OTF is not named, and it does not matter: every district's conduct code bans all knives, and the statute's list reads as a floor, not a ceiling. Leave it at home on a school day.
  626.10
• Courthouses and public buildingsPenal Code 171b bans switchblades "as defined in Section 17235" in state and local public buildings. A knife under 2 inches is not a switchblade under 17235, so the letter of 171b does not reach it, but the screening checkpoint at every courthouse will take it or send you back to your car. Treat public buildings as no-knife zones.
  171b
• AirportsNo knives of any kind past the TSA checkpoint, however short the blade. Checked bags are fine.
  TSA
• Private propertyStadiums, concert venues, theme parks and employers set their own rules, and most ban knives at the door.
  Posted rules
• Los Angeles and other citiesLos Angeles bans carrying in plain view any knife with a blade of 3 inches or more, which an under-2-inch OTF never triggers. San Francisco and Oakland have ordinances of their own. A closed knife in a pocket is the safe default in every city.
  LAMC 55.10

Buying, Shipping and the Automatic You Already Own

Because 21510 bans selling, lending or giving a switchblade of 2 inches or more inside California, an honest retailer will not ship a full-size automatic to a California address, and a seller who offers to is telling you something about the seller. Automatics under 2 inches ship normally, as do manual folders and fixed blades. If you already own a full-size automatic in California, 21510 does not make owning it at home a crime. What it bans is carrying it on your person, keeping it in the passenger area of a vehicle in a public place, and selling, lending or transferring it. Keep it in the house, do not drive with it, and do not sell it in state.

What the Internet Gets Wrong

Four things. First, that a 2-inch blade is legal: the statute says "two or more inches," so 2.00 is over the line and the legal number is anything under it. Second, that OTF knives are banned in California: they are switchblades under 17235 like any other automatic, and the same 2-inch rule applies, which is why under-2-inch OTFs exist. Third, that only the sharpened edge counts: nothing in the Penal Code says so, and the safe measurement is tip to handle. Fourth, that assisted openers fall under the rule: 17235 excludes a knife that opens with one hand by thumb pressure on the blade or a thumb stud, as long as it has a detent or spring that resists opening, so an assisted opener is legal in California at any blade length. Our California knife law guide has the statutes, the penalties and the city rules.