Paintball Has Its Own Language
The first time I walked into a paintball shop and heard two guys talking about bore-matching their inserts, running a 68/45 with a spool valve, and laning the dorito side off the break, I felt like I’d walked into a conversation in a foreign language.
Paintball is full of jargon. Some of it is intuitive, some of it is borrowed from other sports, and some of it makes absolutely no sense until someone explains it to you. I spent my first year just nodding along and Googling terms on my phone between games.
This is the glossary I wish I had when I started. Over 80 terms, organized alphabetically, explained in plain English. Bookmark it, come back to it, and stop pretending you know what “eyes” means when someone asks if your marker has them.
A
Agitated hopper — A hopper with a small paddle or fin that stirs the paintballs to prevent jams. A step up from a basic gravity hopper but not as reliable as a full electronic loader. Good enough for recreational play but not for anything competitive.
Air source — Whatever supplies compressed gas to your marker. The two main types are CO2 and HPA (high-pressure air). HPA is the standard for serious players; CO2 is cheaper but less consistent.
Anti-chop eyes — See Eyes.
ASA (Air Source Adapter) — The part of the marker where your air tank screws in. Most ASAs have an on/off lever so you can de-gas your marker without unscrewing the tank. A small detail, but a good ASA with on/off saves you a lot of hassle.
B
Back player — A player position in tournament paintball. Back players set up behind rear bunkers, shoot lanes off the break, and communicate enemy positions to the rest of the team. They burn through the most paint and need to be accurate at distance. See my strategy guide for more on positions.
Ball break — When a paintball breaks inside your marker, barrel, or hopper instead of leaving the barrel intact. Ball breaks are messy, hurt accuracy, and usually require you to squeegee your barrel before you can shoot straight again. Low-quality paint and cold weather make breaks more common.
Barrel — The tube attached to the front of your marker that the paintball travels through. Barrels come in different lengths, bore sizes, and materials. Length affects sound and marginal accuracy; bore size affects efficiency and consistency.
Barrel break — When a paintball breaks inside the barrel specifically. You’ll know it happened because your next few shots will curve wildly and splatter paint everywhere.
Barrel sock — A safety device that covers the end of your barrel when you’re not on the field. Required at every field and event. It catches any paintball that accidentally fires. Always keep your barrel sock on in staging areas — this is non-negotiable safety equipment.
Blind firing — Shooting without looking where you’re aiming, like sticking your marker over or around a bunker and pulling the trigger. Most fields prohibit this because you could hit someone at close range without knowing it. Don’t do it.
Blowback — A marker action type where the bolt is pushed backward by gas pressure after each shot, then a spring pushes it forward again to load the next ball. Most affordable mechanical markers use blowback action. Simple and reliable, but not as smooth or air-efficient as spool or poppet valve designs.
Bolt — The internal component that loads a paintball from the feed tube into the chamber and then allows gas to fire it. Different marker types use different bolt designs.
Bonus ball — Shooting someone who is already eliminated and walking off the field. This is poor sportsmanship. One or two extra balls after an elimination is sometimes unavoidable (reaction time), but intentionally lighting up someone who’s clearly out is a jerk move.
Bore size — The internal diameter of your barrel. Standard .68 caliber paintball bore sizes typically range from .681 to .693. Matching your bore size to your paint size (bore matching) improves accuracy and efficiency. Barrel kits with interchangeable inserts let you adjust to different paint sizes.
BPS (Balls Per Second) — The rate of fire of your marker. A semi-auto pulling as fast as you can might hit 6-8 BPS. Ramping or full-auto modes on electronic markers can hit 10+ BPS easily. Tournament caps are typically 10.2 BPS.
Break — Has two meanings in paintball. (1) When a paintball breaks, splattering paint on impact — this is how eliminations are determined. (2) The “break” or “breakout” — the initial sprint at the start of a tournament point when both teams run to their assigned bunkers.
Bunker — Any object on the field used as cover. In speedball, bunkers are inflatable obstacles. In woodsball, bunkers might be trees, wooden structures, barricades, or natural terrain features.
Bunker (verb) — To run up on an opponent’s position and eliminate them at close range. One of the most aggressive and exciting moves in paintball. Getting bunkered stings, but it’s perfectly legal (no surrender rule in tournaments).
Burst disk — A small safety disc in CO2 tanks designed to rupture if the tank is overpressurized. When a burst disk pops, all the gas vents out at once. Loud, startling, but a safety feature doing its job.
C
Caliber — The diameter of the paintball. The two common calibers are .68 (standard) and .50 (low-impact). Most competitive and recreational play uses .68 caliber. Some fields offer .50 cal for younger or more pain-sensitive players.
Case — A bulk box of paintballs, typically containing 2,000 rounds. Paint is bought and discussed by the case. “How many cases did we go through?” is the universal end-of-day question.
Center flag — A game format where a single flag is placed in the middle of the field. Teams try to grab it and hang it on the opposing team’s starting station. This is the standard format for tournament play.
Chrono / Chronograph — A device that measures the velocity of your paintball in feet per second (FPS). Every field requires you to chrono your marker before playing. The standard safe limit is 280-300 FPS. Shooting over the limit gets you kicked off the field.
CO2 (Carbon Dioxide) — A compressed gas used to power paintball markers. Cheaper than HPA but less consistent, especially in cold weather. CO2 can cause velocity spikes and is harder on internal o-rings. Most serious players switch to HPA quickly.
Cover fire — Shooting at or near an opponent’s position to keep them pinned behind their bunker while a teammate moves. Not meant to hit them directly (though that’s a bonus) — the goal is to prevent them from popping out and shooting your moving teammate.
Cross / Crossing — Moving from one bunker to another across the field, perpendicular to the opposing team’s line of sight. One of the riskiest moves because you’re briefly exposed while running across open ground. Cover fire from teammates is essential when crossing.
D
Dead box / Dead zone — The designated area where eliminated players go after being hit. Once you’re out, you walk to the dead box with your marker raised and barrel sock on. In tournaments, refs direct you there. In rec play, it’s usually just a general staging area.
Detent — A small rubber or spring-loaded component inside the marker’s breach that prevents paintballs from rolling out of the barrel before being fired. Without detents, balls can roll forward and drop out of the barrel or double-feed. Replace them when they wear out — they’re cheap.
Dorito — A triangle-shaped inflatable bunker used in speedball. Named because it looks like a Dorito chip standing on its point. “Dorito side” refers to the side of the field where the dorito bunkers are placed (as opposed to the snake side).
Drop forward — A mounting bracket that moves your air tank forward and down from the standard ASA position. Popular in the early 2000s to bring the tank closer to the body for a more compact profile. Less common now as markers have gotten smaller and lighter.
Dual-feed — A hopper or feed system that can accept paintballs from two sources. Some mag-fed markers have dual-feed options allowing both magazine and hopper loading.
E
Efficiency — How many shots a marker can fire per fill of its air tank. A marker that gets 1,200 shots per tank fill is more efficient than one that gets 800. Spool valve markers are generally less efficient than poppet valve designs, though the gap has narrowed significantly.
Electronic marker — A marker that uses a battery-powered circuit board and solenoid to control firing. Electronic markers offer multiple firing modes (semi, burst, ramping), higher rates of fire, and smoother shots compared to mechanical markers. Required for tournament play. See the full breakdown of marker types.
Elimination — When a player is hit by a paintball that breaks and leaves a visible mark. That player is out for the remainder of the game (in most formats). The paint must break to count — a ball that bounces off without leaving paint is not an elimination.
Eyes (anti-chop eyes) — Infrared sensors inside the marker’s breach that detect whether a paintball is fully loaded before allowing the marker to fire. Without eyes, the bolt can close on a partially loaded ball, chopping it in half and creating a mess. Eyes virtually eliminated ball chops in electronic markers. Most modern markers have them.
F
Feed neck — The opening on top of the marker where the hopper attaches. Feed necks are typically clamping (adjustable) or threaded. A good clamping feed neck holds your hopper secure without wobble.
First Strike — A brand of fin-stabilized, shaped paintball rounds made by Tiberius Arms. First Strike rounds are significantly more accurate at range than standard paintballs but cost much more. Used primarily in mag-fed and scenario play.
Flag station — The location where a team hangs the flag to score a point in center-flag format. Usually a pole or clip at each team’s starting position.
Flanking — Moving around the side of the opposing team to attack from an unexpected angle. One of the most effective tactics in paintball and the reason teams need awareness of both sides of the field.
FPO (Field Paint Only) — A policy requiring players to purchase paintballs from the field rather than bringing their own. Nearly universal at commercial fields and mandatory at tournaments. It’s how fields and events make money.
Front player — The aggressive, fast player in a tournament lineup who sprints to forward bunkers off the break. Fronts need speed, small profile play, and the ability to win one-on-one gunfights. Often the most athletic players on the team.
FPS (Feet Per Second) — The measurement of paintball velocity. Standard safe limits are 280-300 FPS. Higher FPS means more range and flatter trajectory, but also more pain on impact and greater risk of injury. Always chrono before playing.
G
Goggle system — See Mask.
Gravity hopper — The most basic type of hopper. Paintballs sit in the container and gravity feeds them down into the marker. Cheap and reliable at low rates of fire, but they can’t keep up with electronic markers. Fine for rental and casual play.
Gun — What most people outside paintball call a paintball marker. Within the paintball community, “marker” is the preferred term. The industry deliberately moved away from “gun” for PR and legal reasons. In casual conversation, nobody actually cares which word you use.
H
Hopper — The container that sits on top of your marker and feeds paintballs into it. Also called a loader. Comes in gravity-fed and electronic force-fed varieties. A good electronic hopper is one of the most important upgrades you can make — a marker is only as fast as its hopper can feed.
HPA (High-Pressure Air) — Compressed atmospheric air stored in a tank at 3,000 or 4,500 PSI. HPA is the preferred air source for serious players because it’s more consistent than CO2, works in all temperatures, and is gentler on marker internals. See CO2 vs HPA for the full comparison.
Hydro test — A required pressure test for HPA tanks that must be performed every 3 or 5 years (depending on the tank). A certified shop submerges the tank in water and pressurizes it to check for leaks or structural weakness. If your tank fails hydro, it’s done — you need a new one. Check the born-on date stamped on your tank.
I
Insert (barrel insert) — A removable sleeve that fits inside a barrel system to change the bore size. Barrel kits come with multiple inserts so you can bore-match to whatever paint you’re shooting that day. One barrel back with a set of inserts covers all your bases.
Inline regulator — A regulator built directly into the marker’s gas line (as opposed to one on the tank). Inline regs give the marker more precise control over operating pressure.
J
Jersey — The athletic shirt worn during paintball, typically with padding on the chest, arms, and shoulders. Tournament teams wear matching jerseys with numbers. Paintball jerseys are designed to be loose-fitting and slippery so paintballs are more likely to bounce rather than break.
K
Kit — A general term for your complete set of paintball equipment. “Nice kit” is a compliment. Can also refer to a barrel kit (set of barrel backs and inserts).
L
Lane / Laning — Shooting a specific path or corridor on the field to catch opponents running through it. Off the break in tournament play, back players shoot lanes to eliminate players sprinting to their bunkers. Good laning wins points before they even start. It’s one of the most important skills in competitive play.
Loader — Another word for hopper. Some brands market their products as “loaders” rather than “hoppers,” but they’re the same thing.
Low-pressure — Refers to markers designed to operate at lower gas pressures than standard (typically under 200 PSI operating pressure). Low-pressure operation generally means softer on paint, quieter shots, and better efficiency. Most modern high-end markers are low-pressure designs.
M
Mag-fed — A marker that feeds paintballs from a detachable magazine rather than a hopper. Mag-fed markers hold fewer rounds per magazine (typically 10-20), which creates a more realistic, tactical style of play. Popular in milsim and scenario games.
Marker — The proper term for a paintball gun. Called a “marker” because the original paintball guns were used by forestry workers to mark trees and ranchers to mark cattle. The term stuck when the sport developed.
Mechanical marker — A marker that uses springs and mechanical components (no electronics or batteries) to fire. Mechanical markers are simpler, more reliable, and cheaper to maintain than electronic ones. They fire semi-auto only (one shot per trigger pull) and generally have a lower rate of fire.
Mid player — The versatile player position in tournament play. Mids support front players with cover fire, fill gaps, and push forward when opportunities arise. The best mid players read the field constantly and adapt their play to what’s happening in real time.
Milsim (Military Simulation) — A style of paintball that emphasizes military realism. Players use realistic-looking markers (often mag-fed), wear military-style gear, and follow scenario objectives. Milsim events can last hours or even entire weekends with continuous play.
Muzzle velocity — The speed at which a paintball leaves the barrel, measured in FPS. Same as velocity.
N
NXL (National Xball League) — The premier tournament paintball league in the United States. Runs divisions from D5 (beginner) to Professional, with regional and national events throughout the year. If you want to compete in tournament paintball, the NXL is the main circuit.
O
O-ring — Small rubber sealing rings used throughout paintball markers and tanks to prevent air leaks. O-rings are cheap but essential. When your marker starts leaking air, it’s almost always an o-ring that needs replacing. Keep spares in your gear bag.
Overbore — Using a barrel bore size that is larger than your paintball diameter. Overboring wastes some air (gas escapes around the ball) but is more forgiving of inconsistent paint sizes. Many players prefer a slight overbore for reliability.
Overshooting — Continuing to shoot an opponent after they’ve clearly been eliminated. Also called bonus balling. Whether it’s intentional or not, it’s poor etiquette. In tournaments, excessive overshooting can result in penalties.
P
Paint check — When a player or referee stops to inspect a potential hit. In rec play, players can call for a paint check on themselves or others. In tournaments, refs actively run checks during play. If the mark is a hit (paint, not splatter from another source), the player is eliminated. If it’s not a hit, the player continues.
Pod — A cylindrical plastic tube that holds about 140 paintballs. Players carry pods in a harness on their back and use them to reload their hopper during play. You’ll hear pods called “pots” in some regions.
Pod pack / Pod harness — A belt or vest worn around the waist that holds pods. Pack sizes range from 2-pod to 6-pod capacity. Tournament players typically run 4-pod packs. More pods means more paint on you, but also more weight.
Poppet valve — One of two main valve designs used in electronic markers (the other being spool valve). Poppet valves use a spring-loaded poppet to control gas flow. They’re generally louder than spool valves but more air-efficient. Planet Eclipse’s Geo and older Ego lines are classic poppet designs.
PSI (Pounds per Square Inch) — The unit of measurement for air pressure. HPA tanks are filled to either 3,000 or 4,500 PSI. Your marker’s operating pressure is much lower, typically 100-300 PSI depending on the design. Regulators step down the tank pressure to operating pressure.
Pump — A marker that requires you to manually pump a handle to chamber each shot. Pump paintball is the most stripped-down form of the game — one shot at a time, every shot counts. It forces you to be more accurate and tactical. There’s a dedicated pump community that wouldn’t play any other way.
R
Ramping — An electronic firing mode where the marker automatically increases its rate of fire once you hit a minimum trigger pull speed (usually around 5 BPS). Once activated, ramping maintains a consistent high rate of fire (up to the tournament cap) as long as you keep pulling the trigger at the minimum rate. It’s the standard firing mode in tournament play because it provides consistent BPS without requiring you to walk the trigger perfectly. See electronic vs mechanical for more on firing modes.
Regulator (reg) — A device that reduces high-pressure air from the tank to the lower operating pressure the marker needs. Tanks have built-in regulators, and many markers have secondary inline regulators for finer control. Good regulation means consistent velocity shot to shot.
ROF (Rate of Fire) — Same as BPS. How many paintballs your marker fires per second. Often used interchangeably with BPS in conversation.
S
Scenario — A style of paintball game built around a storyline, missions, or objectives beyond simply eliminating the other team. Scenario games can involve capturing bases, rescuing props, completing missions, and role-playing different factions. Big scenario events can last 12-24 hours with hundreds of players.
Semi-auto — A firing mode where one trigger pull fires one shot. The marker automatically resets for the next shot (unlike a pump). Semi-auto is the baseline firing mode for all electronic and most mechanical markers.
Snake — A long, low, tubular inflatable bunker that runs along one side of a speedball field. The snake is the most important bunker on the field because a player inside it can crawl its length while staying completely hidden. Getting a player alive in the snake is a huge advantage. “Snake side” refers to that entire side of the field.
Snap shooting — Quickly popping out from behind a bunker, firing one or more shots, and immediately ducking back behind cover. Good snap shooting minimizes your exposure time. The best players can snap out, fire accurately, and get back in under a second.
Solenoid — The electromechanical valve in an electronic marker that controls gas flow when the trigger is pulled. The circuit board sends a signal to the solenoid, which opens to allow air to fire the ball. The solenoid is the heart of an electronic marker’s operation.
Speedball — A style of paintball played on a flat, open field with inflatable bunkers (called “sup’air” bunkers). The field layout is symmetrical. Speedball is fast, aggressive, and the basis for tournament play. See woodsball vs speedball for how the two styles compare.
Spool valve — One of two main valve designs in electronic markers (the other being poppet valve). Spool valves are generally smoother and quieter than poppet valves but less air-efficient. The Planet Eclipse CS line, Dye M3+, and Shocker are popular spool valve markers.
Staging area — The designated area at a paintball field where players gather between games. Masks can be removed in the staging area, but barrel socks must be on. This is where you’ll air up, load paint, organize teams, and hang out.
Surrender rule — A rule at some recreational fields requiring players to offer a surrender rather than shoot an opponent at very close range (usually under 10-15 feet). The opponent can accept or decline. Tournament play has no surrender rule — if you’re close enough to shoot, you shoot.
T
Thermal lens — A dual-pane goggle lens with a sealed air gap between the layers. The air gap prevents fogging, similar to double-pane windows. A thermal lens is one of the most important investments you can make. Fogged-up masks make you blind and miserable.
Tournament cap — The maximum rate of fire allowed at a tournament, typically 10.2 BPS. Your marker’s software must be programmed to not exceed this cap. Markers are checked before events to ensure compliance.
Trigger walking — A technique for firing semi-auto rapidly by alternating between two fingers on the trigger. Your index and middle fingers “walk” the trigger back and forth. Before ramping was standard, trigger walking was how players achieved high BPS in semi-only formats.
U
Underbore — Using a barrel bore size smaller than your paintball diameter. The ball creates a tighter seal in the barrel, which can improve efficiency (less air blows past the ball) but increases the risk of barrel breaks if the fit is too tight. Some players prefer a slight underbore for better efficiency and a more consistent shot.
V
Velocity — The speed at which a paintball travels, measured in FPS. Standard safe velocity is 280-300 FPS at most fields. Higher velocity means a flatter trajectory and longer effective range, but also more pain. Always chrono and stay within field limits.
W
Wiping — Secretly rubbing off a paint hit so referees or other players don’t see it. Wiping is cheating. In tournament play, getting caught wiping earns you a major penalty and can result in suspension. In rec play, it earns you a reputation nobody wants. Just call yourself out.
Woodsball — Paintball played in natural terrain — woods, fields, and outdoor environments with natural or built cover. Woodsball is the original form of paintball and remains the most popular for recreational players. Games tend to be longer and more tactical than speedball, with an emphasis on stealth and movement.
Wrap (verb) — To shoot around the side of a bunker at a sharp angle, reaching your marker far enough around the edge that you can hit opponents who think they’re safely behind their cover. Also refers to being “wrapped” — when an opponent has an angle on you that your bunker doesn’t protect you from. If you’re getting wrapped, you need to either move or bump out and eliminate the threat.
X
Xball — A tournament format that was the predecessor to the current Race-To format. Original Xball used timed halves where teams scored as many points as possible. The format evolved into the Race-To system used by the NXL today, but the name still gets used casually.
Keep This Bookmarked
Paintball terminology keeps evolving as the sport changes, but these terms cover the vast majority of what you’ll hear on the field, in pro shops, and in online discussions. If you’re new, don’t worry about memorizing everything — you’ll pick most of it up naturally just by playing.
If you’re just getting started, check out how to play paintball and the basic rules to get up to speed on the fundamentals. And if you heard a term at the field that’s not on this list, reach out and I’ll add it.