Yes, a rubber bullet trap can catch fire. The US Department of Defense reports rubber-trap fires that caused significant damage at several of its indoor ranges, mainly through poor maintenance and tracer rounds (UFC 4-179-02). The Estonian Centre for Defence Investments (RKIK) bans tracers in its indoor ranges because of the fire risk. BulletTrap Baltic ballistic rubber is rated Efl to EN 13501-1; a Cfl flame-retardant version with a special binder is available on request. Both are flooring classes and do not describe a bullet heating the rubber.
| Document | Fire requirement for an indoor range | Point |
|---|---|---|
| Estonia: RKIK Annex 2 (requirements of the Centre for Defence Investments for its own ranges, 05.11.2025) | No tracer ammunition indoors, because of the fire risk | 2c |
| Estonia: RKIK Annex 2 | Range built as a separate fire compartment; class TP-1, EI30; fire alarm and emergency lighting; at least 2 exits; fire-safety instruction in the range rules | 11, 139, 141, 142 |
| Estonia: RKIK Annex 2 | Water sprinklers not recommended because of bullet hits; dry systems only, if any | 136, 142 i |
| Estonia: regulation No 39 (in force 10.10.2026) | Surfaces where shooting residues collect are cleaned regularly | § 12(6) |
| Latvia: Cabinet Regulation No 494 | Indoor range of fire-resistance degree no lower than U2; fire alarm | 7.1, 7.2–7.4 |
| Germany: Schießstandrichtlinien | Range is a fire compartment, load-bearing parts and partitions at least F 90; acoustic linings at least B 1 (DIN 4102-1) or C-s1,d0 (EN 13501-1); floors Cfl-s1 | 5.1.9 |
| Germany: Schießstandrichtlinien | Bullet trap fill at least B 2, better B 1; wood-wool and wood-block traps not allowed indoors | 2.8.5.4.1, 5.1.8 |
| Poland: Dz.U. 2022 poz. 848 (police, border guard, state protection ranges) | Separate fire zone inside another building; linings at least “trudno zapalna” (hardly flammable) | § 6(4), § 7(2) |
| In the US: UFC 4-179-02 | Tracer, incendiary and armour-piercing rounds not supported; granulated rubber traps need ceiling vents above the trap, a smoke barrier and a fire brigade access plan; 2-hour separation from the rest of the building | 4-1.1, 4-17.2.1, 4-6 |
| UK military: JSP 403 Vol 2, Ch 3 | Rubber and wood can be fire hazards; fire service approval for every new indoor range | 0360, 0361 |
Can a rubber bullet trap catch fire?
Yes. Three independent documents say so. AFEMS, the European sporting ammunition manufacturers’ association, wrote in its 2002 range handbook that rubber traps “can catch fire from friction heating of the rubber”, and that heated rubber sticks to bullets. The UK military range standard lists rubber and wood as possible fire hazards (JSP 403, paragraph 0360). The US Department of Defense records actual trap fires (UFC 4-179-02, note to 4-17).
The trap is not the only fuel in the room. Up to 2–7 % of the powder charge stays unburnt (RKIK Annex 2, points 159–160), and powder deposits on ventilation grilles are named as a major fire-safety problem (point 137). The UK document recommends a thin rubber sheet over granulated traps to keep target debris and unburnt powder out of the crumb (0360).
What causes fires in rubber bullet traps?
The US Department of Defense names two main causes: poor maintenance and tracer ammunition, which “should never be allowed” in indoor ranges (UFC 4-179-02, note to 4-17). AFEMS adds friction heating. RKIK Annex 2 bans tracers in the Estonian defence indoor ranges outright (point 2c).
The UFC note describes granulated rubber traps, with crumb of 9.6–22 mm average size at least 0.60 m deep (4-17.2.1), and asks for fire retardant to be re-applied whenever the crumb is sifted (note to 4-17). The BulletTrap Baltic BRB-200 is a different construction: a 500 × 500 × 200 mm block of high-density SBR (850 kg/m³) with an armoured steel plate behind it. A tracer ban, cleaning and a fire compartment are just as relevant to it. The steel layer is covered in steel backing plate thickness for a bullet trap.
Documented range fires involving rubber
Three US range fires have a public source. In two of them rubber of the bullet trap burned; in the third the range was built of steel and thick rubber. None of the reports established the cause.
| Range | Date | What the source reports | Source |
|---|---|---|---|
| Law enforcement training facility, Maple Grove, Minnesota | 22.01.2011 | Fire during shooting in a trap of thick shredded rubber that the fire chief called “rather dry”. He suggested a spark from a bullet striking metal; cause not established. Sprinklers stopped the spread but did not put the fire out | CBS / WCCO news |
| Indoor range, Chattanooga, Tennessee | 18.12.2020 | Rubber of the bullet trap caught fire on the pistol side; fire held in one corner; the business said the store itself was not on fire; cause under investigation | City of Chattanooga press release |
| Range and shop, Horsham, Pennsylvania | 05.01.2026 | Range built of steel and thick rubber burned; fire “deep-seated and very tough to access”, part of the building demolished for access. A possible link to the HVAC system was mentioned; it is not established that the trap ignited first | CBS Philadelphia news |
UFC 4-179-02 also refers to fires at several US Department of Defense indoor ranges, without names or dates.
What do Efl, Dfl and Cfl mean for a rubber trap?
Efl is the lowest passing class for floorings in EN 13501-1. It means the material passed a 15-second small-flame test with flame spread of no more than 150 mm within 20 seconds, as set out in Commission Delegated Regulation (EU) 2016/364. Dfl, Cfl and Bfl add a radiant-panel test. “fl” means floorings. Wall and ceiling materials are classed on a separate scale (E, D, C, B); D, C and B use the single burning item test.
| Class (floorings) | Test | Criterion |
|---|---|---|
| Efl | EN ISO 11925-2, small flame for 15 s | Flame spread ≤ 150 mm within 20 s |
| Dfl | EN ISO 9239-1 radiant panel, plus the small-flame test | Critical heat flux ≥ 3.0 kW/m² |
| Cfl | Radiant panel, plus the small-flame test | Critical heat flux ≥ 4.5 kW/m² |
| Bfl | Radiant panel, plus the small-flame test | Critical heat flux ≥ 8.0 kW/m² |
| A2fl / A1fl | Non-combustibility (EN ISO 1182, EN ISO 1716); A2fl also radiant panel ≥ 8.0 kW/m² | Practically non-combustible |
| Walls and ceilings: E, D, C, B | E: small flame 15 s. D, C, B: single burning item test EN 13823 plus small flame 30 s | Fire growth index FIGRA ≤ 750, ≤ 250, ≤ 120 W/s for D, C, B |
BulletTrap Baltic ballistic rubber is rated Efl (EN 13501-1). A flame-retardant Cfl version with a special binder is available on request for indoor ranges with stricter fire requirements. Both are flooring classes. Germany’s guidelines ask for Cfl-s1 on floors and C-s1,d0 or B 1 on acoustic linings, so the class for each surface is agreed in the specification.
Reaction to fire is not fire resistance. The EI30 in RKIK Annex 2 is a fire-resistance requirement for the compartment, not a reaction-to-fire class of the lining. Full product data is on ballistic rubber blocks and anti-ricochet tiles.
What should a range operator do to cut the fire risk?
Ban tracers first: both RKIK Annex 2 (point 2c) and UFC 4-179-02 (4-1.1) exclude them from the indoor ranges they govern. Then work through the rest of the list.
| Action | Detail | Source |
|---|---|---|
| No tracer or incendiary ammunition | Written into the range rules | RKIK Annex 2, 2c; UFC 4-179-02, 4-1.1 |
| Clean residue surfaces | Regularly, wherever shooting residues collect | Estonia regulation No 39, § 12(6) |
| Change filters on time | At the set pressure drop on the differential gauges; full filters raise the fire risk | RKIK Annex 2, 89 |
| Clean ducts and grilles | Through inspection hatches; powder deposits on grilles are a fire problem | RKIK Annex 2, 90, 137 |
| Build the range as a fire compartment | EI30 (Estonia, RKIK); F 90 (Germany); U2 building (Latvia) | RKIK 142; SchießstandRL 5.1.9; MK 494, 7.1 |
| Plan smoke venting and fire brigade access to the trap | In the US: ceiling vents above the trap, smoke barrier, access plan agreed with the fire marshal | UFC 4-179-02, 4-17.2.1 |
| Specify the fire class with the authority | Where Efl is not enough, the Cfl version | EN 13501-1; product data sheet |
The ventilation side, including filter classes, is in indoor range ventilation requirements. Lead from unburnt powder is covered in lead dust in an indoor shooting range.
Questions about rubber bullet traps and fire
Does flame-retardant rubber prevent a trap fire?
A flame-retardant class describes behaviour in a standard test. Cfl means a critical radiant heat flux of at least 4.5 kW/m² plus a 15-second small-flame test. It does not test a burning tracer or friction heat from bullets. The US requirements additionally ask for retardant to be re-applied to sifted crumb and for fire brigade access to the trap.
Are tracers allowed on a rubber bullet trap?
Not in the indoor ranges covered by these documents. RKIK Annex 2 bans tracer ammunition in the Estonian defence indoor ranges because of the fire risk (point 2c), and UFC 4-179-02 says tracers “should never be allowed” in indoor ranges.
What fire class is BulletTrap Baltic ballistic rubber?
The standard material is rated Efl to EN 13501-1, and a flame-retardant Cfl version with a special binder is available on request. Both are flooring classes. For wall and ceiling use, ask BulletTrap Baltic for the class under the non-floor scale before the specification is fixed.
Is Efl the same as fire resistance EI30?
No. Efl is a reaction-to-fire class of a flooring material (EN 13501-1). EI30 in RKIK Annex 2 is a fire-resistance requirement for the range compartment, not a reaction-to-fire class of the lining.
Should an indoor range have sprinklers?
RKIK Annex 2 does not recommend water sprinklers because bullets hit the pipework; if installed, they should be dry systems. In the US, UFC 4-179-02 does not require sprinklers in the range and trap area. In the Maple Grove fire, sprinklers stopped the spread but did not put the fire out.
Do the fire rules apply only to ranges with rubber traps?
No. The tracer ban, fire compartment, filter changes and cleaning of grilles are requirements of the Estonian Centre for Defence Investments (RKIK Annex 2) for its own indoor ranges, whatever the trap. Rubber adds a fuel load that any fire strategy has to cover.
Who approves the fire safety of a new indoor range?
It depends on the country. In the UK military system fire service approval is mandatory for every new indoor range (JSP 403, 0361); in the US the trap fire plan is agreed with the fire marshal (UFC 4-179-02, 4-17.2.1). For other countries the building and fire rules of the country where the range is built apply.
Which fire documents come with BulletTrap Baltic rubber?
BulletTrap Baltic supplies the EN 13501-1 class (Efl, or Cfl on request) and CE marking to EN 14041 with the declaration of performance. The Royal Military Academy reports ES-230403 and ES-240131 are cited by number and date. How to check such documents: how to verify a ballistic equipment supplier.
Sources
- RKIK, Lisa 2. Siselasketiirude nõuded (05.11.2025), points 2c, 11, 89, 90, 136–142, 159–160 — checked 26.10.2026
- Siseministri 05.10.2026 määrus nr 39, § 12(6) — checked 26.10.2026
- Ministru kabineta 28.07.2020 noteikumi Nr. 494, points 7.1–7.4 — checked 26.10.2026
- Schießstandrichtlinien (BMI, 23.07.2012; ASS edition 2022), 2.8.5.4.1, 5.1.8, 5.1.9 — checked 26.10.2026
- Poland: Dz.U. 2022 poz. 848, § 6(4), § 7(2) — checked 26.10.2026
- Commission Delegated Regulation (EU) 2016/364, Tables 1 and 2 (EN 13501-1 classes) — checked 26.10.2026
- US: UFC 4-179-02 Small Arms Ranges (2020, Change 1 2025), 4-1.1, 4-6, note to 4-17, 4-17.2.1 — checked 26.10.2026
- UK: JSP 403 Vol 2, Chapter 3, paragraphs 0360–0361 — checked 26.10.2026
- AFEMS, Shooting Ranges and the Environment: A Handbook for European Range Managers (2002), p. 56 — checked 26.10.2026
- CBS / WCCO, Fire at law enforcement training facility in Maple Grove (22.01.2011) — checked 26.10.2026
- City of Chattanooga, Firefighters halt gun range blaze (18.12.2020) — checked 26.10.2026
- CBS Philadelphia, Horsham range fire (05.01.2026) — checked 26.10.2026
Need the fire class for your range file?
Send the range drawing, the calibres fired and the fire requirement your authority applies. We return the rubber specification with its EN 13501-1 class and the CE documents; the Royal Military Academy reports are cited by number and date.
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