view cart (0 Items)

EP3 Sonic Defenders®

Filtered Flanged Earplugs

Hover on image to zoom



Noise Reduction Rating 24dB (with filter caps inserted)
Color Black, Clear, Orange
Size S, M, L
Filter Yes
Stem Double Flanged
Radio Comm Compatible Yes
Included Lanyards Detachable
Features -


EP3-BK-LPR 084871315173
EP3-BK-MPR 084871315166
EP3-BK-MPR-BULK 084871315517
EP3-BK-SPR 084871315159
EP3-LPR 084871250610
EP3-LPR-BULK 084871250634
EP3-MPR 084871250603
EP3-MPR-BULK 084871250627
EP3-SPR 084871250641
EP3-SPR-BULK 084871310048
EP4-BK-LPR 084871315203
EP3-OR-SPR 084871318815

For detailed specifications and sizing chart, click here.

EP3 Sonic Defenders protect your hearing without interfering with your ability to hear routine sounds or conversations. Their double-flanged-stem design fits most people and provides a Noise Reduction Rating (NRR) of 24dB. Sounds, at safe levels, are allowed to pass through into the ear canal, while potentially harmful noises (above 85dB) are reduced via a proprietary design that incorporates a special noise-reducing filter. EP3s include attached filter caps, which can be inserted for additional protection and blocking out lower-level noise, like that heard on a plane, where hearing ambient sounds or conversations isn't critical. Right/left color-coded Sonic Defenders are made from a soft but durable, hypoallergenic polymer that provides all-day comfort and an extended product life (up to 6+ months, depending on usage and care). Their patented EarLock® retention rings lock the earplugs in place, while soft, adjustable double-flanged stems provide secure seals in the ear canals. A low-profile design means EP3s can be worn while wearing a helmet or mask, or while using a phone or headset. Available in clear, black, or orange.

Comfortable EP3 Sonic Defenders also serve as earpieces for SureFire Hearing Protection and other compatible radio communication systems* simply by removing the noise-reducing filter and attaching the earpiece to the system. NOTE: EP3 earpiece will not provide hearing protection if the noise-reducing filter is removed.

EP3s are available in small (S), medium (M), and large (L). Proper size is based on the dimensions of your ear's concha bowl. Size "medium" fits most people; however, to ensure the best possible fit, click on the Sizing Chart thumbnail image above or download detailed specifications here to also view the sizing chart on page 4. For those with larger (in diameter) ear canals, the three-flange stem of our EP4 Sonic Defenders may provide a better fit than the EP3's two-flange stem.

EP3 Sonic Defenders are sold as a single left/right set or in a box containing 25 sets. Each set is packaged in a convenient carry case and includes a polymer lanyard.

Thales: Covert Security Harness; Harris: Security Force Communication Set;

Motorola: Surveillance Kits; Tactical Command Industries: Tactical Earpiece Products; Peltor: Lightweight Systems-Hearplug;
Silynx: C4Ops Headset

[NSN: 6515-01-549-6448, 6515-01-549-6453, 6515-01-549-6457]
  • 24dB Noise Reduction Rating (NRR) with filter caps inserted
  • Lowers potentially dangerous noise levels above 85dB
  • Hear safe sound levels (with filter caps out) as if you weren't wearing ear plugs
  • Patented EarLock® retention rings utilize seven contact points to lock earpieces in place and fit the same way every time; soft, double-flanged stems provide secure seals and all-day comfort
  • Made from hypoallergenic, medical-grade polymer that's soft, durable, and long-lasting
  • Low-profile design allows you to keep them in place while wearing a mask, helmet, hat, or while using phone, headphones, or supplemental hearing muffs
  • Serve as earpieces for compatible* radio communication systems
  • Available in clear, black, or orange
  • 26" polymer lanyard included

Related Information

Parts and Accessories
Fit and Finish
Product Design
Product Performance
SF Customer Service
Overall Value
See all ratings Close ratings


Great fit, love the feel, can wear all day. I work on shop compressors and loud field pumps, can still talk to others without removing and can tolerate plugs are a great design, I will buy more for myself and tell others. Same as last time :-)

Reviewed by Ricky New (Posted on 4/14/15)

Fit and Finish
Product Design
Product Performance
SF Customer Service
Overall Value
See all ratings Close ratings


Great fit, love the feel, can wear all day. I work on shop compressors and loud field pumps, can still talk to others without removing and can tolerate plugs are a great design, I will buy more for myself and tell others.

Reviewed by Ricky (Posted on 3/8/15)


I have several pairs of the clear style and carry them with me to concerts, arena events, etc when the nose level gets high enough for ear damage. No one notices. Easy to insert, work great.

Reviewed by Elcee (Posted on 1/23/15)

Comfortable and Easy to use

These are very easy to use and have a comfortable fit. We have the supervisors using these on the shop floor. They leave these on all day, are able to have a conversation with their workers throughout the day.

Reviewed by Kirk (Posted on 1/4/15)

medically needed

My son has epilepsy, medically fragile epilepsy. He has sound sensitivity seizures. He used to wear shooting earmuffs and stuck out like a sore thumb in elementary school, he had to be led out of school before fire drills. Since we have used the EP3 Sonic Defenders (3rd grade and he is in the 11th now) he is included in his classes. Now mind you, they do not protect 100%, but they do do a great job in bring down the sound and protect my son. I send the website to parents with autistic children to use.

My son wears them daily and is closer to normal as any normal person is because of them! Thank you SureFire, you have given my son some "normal".

Reviewed by Missy Tsuchida (Posted on 12/24/14)

Love the EP3

These are a necessary item for everyone. Comfortable, effective, and a great price. I've purchased for two other people as gifts and they love them also. The word is out on the production floor and now others are buying. Great product!

Reviewed by JenJen (Posted on 12/2/14)

Sonic Defenders

EP3's rock! These things are light, super comfortable and work really well at the indoor range. Just be careful that someone doesn't nab them; I've had several people ask me where to get there own! Ha!

Reviewed by C. Kid (Posted on 11/15/14)


I love these ear plugs. They are very comfortable; you hardly know you're wearing them.
I wouldn't suggest them for an indoor range - I'd probably still wear a big pair of ear muffs, but in the field, these are excellent.
Fit is perfect and the ability to still hear most sounds as if I wasn't wearing them is great.

Reviewed by Darrick (Posted on 10/30/14)

Best & Comfortable

I bought these for work and they are the most comfortable in the ear and they work, great. Very happy. One of the best purchases I've made lately. If I need another pair I will for sure buy another pair. I would recommend anyone looking to get ear protection to get Sure Fire ear protection.

Reviewed by al51 (Posted on 10/16/14)

Every Day for The past 5 years

I have worn the Sonic defender 3 every day for the last 5 years,at work as well as the Army. I have never had such an effective pair of ear Plugs. Thank you for the great product.

Reviewed by Mike (Posted on 8/22/14)