IDPA: a beginner's guide to the rules of defensive pistol shooting, divisions and scoring
What is IDPA
IDPA (International Defensive Pistol Association) is the association, founded in 1996 in the United States, that governs a defensive pistol shooting sport based on simulated self-defence scenarios. Unlike other practical shooting disciplines, IDPA requires guns, holsters and equipment suitable for everyday concealed carry: its stated aim is to test the shooter's skill, not their equipment.
That's why IDPA is shot with stock or lightly modified pistols, carry holsters, magazine pouches hidden under a concealment garment, and rules that reward the use of cover, the correct order of target engagement and realistic reload management.
In this guide we summarise the key points of the 2026 IDPA Rulebook (version 2026.2): stage structure, divisions, power factor, scoring, penalties, safety and equipment. If you're coming from IPSC, you'll also find a comparison between the two disciplines.
How an IDPA match is structured
An IDPA match consists of one or more stages, each divided into one or more strings: a string starts with the start signal and ends with the last shot fired. The rules provide for two types of stage:
- Scenario stages: they represent a realistic self-defence situation, described in writing, with props and targets consistent with the scenario. They always use Unlimited scoring.
- Standards stages: they test shooting and gun-handling fundamentals, including with prescribed drills, and may use Limited or Unlimited scoring. At sanctioned matches, classifiers and special matches aside, a maximum of two are allowed.
A few stage design limits help explain the spirit of the sport:
- no string may require more than 18 rounds;
- 75% of the rounds in the whole match must be fired from 15 yards (about 13.7 m) or less;
- in scenarios targets are no further than 20 yards, in standards no further than 30 yards;
- required movement does not exceed 10 yards between positions and 20 yards in total;
- reloads cannot be mandated during the timed stage.
Before each stage the Safety Officer (SO) reads the written stage description and leads a group walkthrough, pointing out cover, fault lines and special conditions. Individual walkthroughs are not allowed, nor is so-called air gunning, i.e. simulating shooting with your hand inside the stage area.
IDPA divisions
The 2026 rules provide for 8 divisions, each scored completely separately. Each one has a set magazine capacity and minimum power factor:
| Division | Rounds per magazine | Minimum power factor | In brief |
|---|---|---|---|
| SSP – Stock Service Pistol | 15 | 125 | Stock service pistols with very limited modifications |
| ESP – Enhanced Service Pistol | 10 | 125 | Service pistols with wider scope for customisation |
| CDP – Custom Defensive Pistol | 8 | 165 | Custom pistols, with the highest minimum power factor of the pistol divisions |
| CCP – Compact Carry Pistol | 10 | 105 | Compact carry pistols |
| CO – Carry Optics | 10 | 125 | Pistols with a red dot optic |
| REV – Revolver | 6 | 105 (Stock) / 155 (Enhanced) | Revolvers, split into Stock and Enhanced |
| BUG – Backup Gun | 8 (semi-autos) / 5 (revolvers) | 105 | Small pistols and revolvers, as a "second gun" |
| PCC – Pistol Caliber Carbine | 30 | 135 | Pistol-calibre carbines |
REV, BUG and PCC are specialty divisions, optional at Tier 1-3 sanctioned matches. Clubs may also run a Specialty Division (SPD) for carry guns that don't fit the other divisions, including calibres smaller than 9 mm. The detailed specifications for each division (maximum gun size and weight, permitted modifications) are in the official Equipment Appendices, which you should always check before buying or modifying a gun.
Some rules apply to every division:
- magazines must be loaded to division capacity, plus one round in the chamber for semi-autos, unless the stage states otherwise;
- with 8 or more rounds per magazine you start with the loaded gun plus two spare magazines; with 6 or 7 rounds you need three spares, with 5 rounds or fewer four;
- the same gun is used for the whole match, unless it becomes unserviceable;
- manual safeties cannot be deactivated: a non-functioning trigger safety or manual safety results in disqualification.
Power factor
As in IPSC, power factor is calculated by multiplying the bullet weight in grains by the velocity in feet per second and dividing by 1000, ignoring decimals. The rulebook gives the example of a 230.1-grain bullet at 794.7 fps, which gives a power factor of 182.
At the chronograph 3 rounds are fired through the competitor's gun: the ammunition passes if at least 2 of the 3 reach the minimum power factor. IDPA has no Major/Minor distinction: there is a single minimum value per division. If you reload, you'll find components and tools in our Reloading section and in our guide to primers, bullets and cases.
Targets and scoring
IDPA scoring is entirely time-based: seconds lost to inaccuracy and penalties are added to the raw time, and the lowest time wins. Accuracy is counted in points down: each point down adds 1 second.
The official IDPA target is a cardboard silhouette with a head and body, divided into zones:
| Hit | Points down | Seconds added |
|---|---|---|
| −0 zone (head or centre of the body) | 0 | 0 |
| −1 zone | 1 | +1 |
| −3 zone | 3 | +3 |
| Miss | 5 | +5 |
| Steel target not knocked down | 5 | +5 |
| Hit on a non-threat (HNT) | — | +5 per hit |
Non-threat targets (not to be shot) are marked with two open hands; threat targets may show a drawn gun or knife. Simulated hard cover is black: a shot passing through it counts as a miss, while soft cover (usually white) can be shot through. Steel targets must fall to score and must be engaged from at least 10 yards.
Unlimited and Limited
- Unlimited: you may shoot each target as many times as you like and the best hits are scored, up to the number required by the stage. If you fire fewer rounds than required, the missing ones count as misses and you also receive a procedural error.
- Limited: you must fire exactly the number of rounds stated. Each extra round brings a procedural error per string and cancels one of your best hits.
Penalties
| Penalty | Time added | When it applies |
|---|---|---|
| PE – Procedural Error | +3 s | Failure to follow the stage procedure or a rule, e.g. shooting past a fault line, not using cover or breaking tactical priority |
| HNT – Hit on Non-Threat | +5 s per hit | A hit on a non-threat target |
| FP – Flagrant Penalty | +10 s | An infraction that gives an advantage of more than 3 seconds, e.g. shooting a one-handed string with two hands or loading magazines beyond division capacity |
| FTDR – Failure To Do Right | +20 s | Serious unsportsmanlike conduct or deliberate violations to gain an advantage |
| DQ – Disqualification | End of the match | Unsafe gun handling, unsportsmanlike conduct, shooting steel targets from less than 10 yards |
A practical example: a shooter completes a stage in 12.50 seconds. On the targets they drop 2 points with two hits in the −1 zone and 3 points with one hit in the −3 zone, a total of 5 seconds. They also receive a PE for shooting outside cover, worth 3 seconds. Their result is 12.50 + 5 + 3 = 20.50 seconds. The final results are based on the sum of the times from all stages.
Rules typical of IDPA
Cover
Shooting from behind cover is a basic IDPA principle: when cover is available, it must be used. With vertical cover you must engage from the sides while staying within the fault lines; with low cover at least one knee must be on the ground. Shooting while touching the ground beyond a fault line earns a PE.
Tactical priority
Targets must be engaged in order of threat: those visible at the same time are engaged from nearest to farthest (they are considered equal if the difference in distance is less than 2 yards), those hidden by vertical cover in the order they appear, and targets in the open take priority over those that can be engaged from cover.
Reloads
The preferred reload in IDPA is the emergency reload, with an empty chamber and magazine. A tactical reload is also allowed, but a magazine removed with rounds left in it must be retained and stowed. The so-called speed reload, i.e. dropping a magazine that still contains rounds on the ground, costs a PE. When using cover you reload without exposing yourself to targets that have not yet been fully engaged.
Concealment garment
Unless the stage description states otherwise, a concealment garment is mandatory, such as a vest or an open shirt, that hides the holster, gun, magazine pouches and magazines. It is checked with your arms extended to the sides, parallel to the ground: the equipment must not be visible from any side. The garment cannot be stiffened or weighted.
Safety
The rulebook opens with Colonel Jeff Cooper's four rules of firearm safety and provides for immediate disqualification for unsafe gun handling. Among the main cases:
- Sweeping: pointing the muzzle, even with an unloaded gun, at any part of a person, including yourself. The only exception is the part of your own body below the belt while drawing and holstering, with the finger outside the trigger guard.
- Safe angles: breaking the 180° plane or the Muzzle Safe Points defined for the stage.
- Negligent discharges: in the holster, behind you, into the ground less than 2 yards from the shooter (except for very close low targets), over the berm, before the start signal or while loading, unloading, reloading or clearing a malfunction.
- Dropping the gun within the stage area, loaded or unloaded.
- Drawing the gun without instructions from the SO or outside the safe area, or drawing it while facing uprange.
Your finger must stay clearly visible outside the trigger guard while loading, unloading, drawing, holstering, moving (when not engaging targets) and clearing malfunctions: the first infraction costs a PE, the second a disqualification.
In the safe area only unloaded guns may be handled: you may draw, dry-fire and do maintenance, but handling ammunition, loaded magazines, dummy rounds or snap caps is prohibited, and reloads cannot be practised. Outside the stage the gun stays holstered, unloaded, with the hammer down or striker forward and no magazine.
Eye and ear protection are mandatory for everyone present. IDPA recommends hearing protection with a minimum attenuation of 21 dB NRR and glasses certified to ANSI Z87.1 with side protection.
Safety Officer commands
Commands are always given in English, all over the world:
| Command | What to do |
|---|---|
| Range is hot | The stage is starting: check your glasses and ear protection |
| Load and make ready (or Make ready) | Load the gun as the stage requires, holster and take the start position |
| Are you ready? | Answer or nod; if you're not ready say "Not ready" and step out of position |
| Standby | Stay still: the signal comes within 1-4 seconds |
| Finger / Muzzle | Warnings: take your finger out of the trigger guard or correct the direction of the muzzle |
| Stop | Stop immediately, finger outside the trigger guard, and wait for instructions |
| If finished, unload and show clear | Unload and show an empty chamber or cylinder |
| If clear, slide forward (or close cylinder) | Close the slide or cylinder |
| Pull the trigger | Semi-autos only: pull the trigger pointing in a safe direction |
| Holster | Holster the gun |
| Range is clear | The stage is over: scoring can begin |
IDPA gear
The criterion is simple: if you wouldn't carry it concealed all day for self-defence, it isn't allowed. Here's what you need:
- Holster: carry or duty type, on the strong-side hip. For a right-handed shooter it is allowed between 12 and 4 o'clock if inside the waistband (IWB) and between 2 and 4 o'clock if outside (OWB), without going forward of the hip bone. It must fully cover the trigger guard, keep the butt above the belt, have a neutral or muzzle-rear cant (maximum 15°) and, if OWB, not stand off more than 3 inches (7.62 cm) from the body. Cross-draw, shoulder, small-of-back and pocket holsters are not allowed. Browse our holsters.
- Belt: no wider than 1¾ inches (about 4.4 cm), no thicker than 5/16 inch (about 8 mm) and threaded through all trouser belt loops except at most two. See our belts.
- Magazine pouches: carry type, on the belt and hidden by the concealment garment; pockets may also be used, but magnets are not a substitute for magazine pouches. Explore our magazine pouches and magazines.
- Concealment garment: a vest or shirt that covers all your equipment. You'll find suitable garments in our clothing section.
- Protection: shooting glasses and ear muffs, both mandatory.
- Optic: essential in Carry Optics. Read our pistol red dot guide and browse our red dots and holosights.
- Flashlight: some stages require a flashlight, which must be suitable for everyday carry or duty use, with at least 60 lumens. See our handheld flashlights and weapon lights.
- Training: a shot timer, IDPA targets and snap caps for dry fire at home.
Knee and elbow pads are only allowed if soft, as are shoes with rubber cleats; gloves are permitted.
IDPA vs IPSC: the main differences
| Aspect | IDPA | IPSC |
|---|---|---|
| Philosophy | Self-defence scenarios, concealed-carry equipment | Freestyle, accuracy, power and speed |
| Scoring | Time plus points down and penalties: lowest time wins | Hit factor (points divided by time): highest value wins |
| Cover | Mandatory when available | Not required |
| Target order | Tactical priority | Free |
| Reloads | Regulated: no magazines with rounds left on the ground | Free, except in specific courses |
| Rounds per string | Maximum 18 | Up to 32 in long courses |
| Holsters | Carry or duty holsters, covered by a garment | Competition holsters allowed, depending on division |
To find out more about the other discipline, read our guide to the IPSC rules.
How to get started in IDPA
- Find an IDPA-affiliated club: the list of clubs is available on the official website idpa.com. Many matches include a short briefing for new shooters before the start.
- Check your equipment: gun, holster, belt and magazine pouches must comply with the rules of your chosen division. If in doubt, ask the Match Director before the match.
- Practise: drawing from under the concealment garment, emergency reloads, shooting from cover and tactical priority can all be practised well in dry fire too, safely.
- Join IDPA: the rules require you to become a member after your third match. To compete for score you also need a classification through the official Classifier, which places you in one of the classes: Novice (NV), Marksman (MM), Sharpshooter (SS), Expert (EX) and Master (MA).
Frequently asked questions
Can I use my carry pistol?
In most cases yes: IDPA was created precisely to let you compete with carry guns and equipment. Check the right division in the Equipment Appendices, taking into account magazine capacity, size, weight and any modifications.
Do I need a red dot?
Only for the Carry Optics division; the other pistol divisions use iron sights. A gun-mounted laser is only allowed if it is not activated during the string, except in Carry Optics and PCC.
Can I use my IPSC holster in IDPA?
Usually not: pure competition holsters are not allowed. IDPA requires a carry or duty holster, positioned within the limits described above and hidden by the concealment garment.
This guide summarises the 2026 IDPA Rulebook (version 2026.2) and is intended as an introduction. The English text of the rulebook is the official one and takes precedence over any translation: to compete, always refer to the rulebook and Equipment Appendices published on idpa.com and to the Match Director's instructions.