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EP3 Sonic Defenders®

Filtered Flanged Earplugs

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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

Great Supplemental Protection.

These are very comfortable. I use these alone when I shoot suppressed for added protection. I also use these under my electronic muffs when training or at the range. I had an older pair from 3-4 years ago and recently misplaced them. I liked them enough I did not hesitate to order 2 more to keep in my bag.

Reviewed by Russell (Posted on 8/6/14)

another layer of protection

SureFire, I wanted to tell You how much of a difference the EP3s made for my wife. To be able to use her ear muffs at the range and still have a layer of protection to depend on at times when she wanted to talk and hear range commands. Now if her ear muffs don't fit just right, she doesn't have to worry about being without adequate protection. This is a good product and is what I have grown to expect from SureFire products. Thanks.

Reviewed by Chris in utah (Posted on 7/4/14)

Good product

I use them whil riding motorcycle, to cut down on wind noise, inside the helmet. They are very effective for me. They allow me to hear normal traffic sounds. They fit well and are very comfortable, while wearing the helmet.

Reviewed by Dave (Posted on 6/19/14)

Good product

They fit well and are very comfortable. Hardly know I'm wearing them.
Hope they last a good while, but I can always re-order :-)

Reviewed by gilbo (Posted on 6/7/14)


Best earplugs ever! I use them on my motorcycle, and this is the first earplugs that have worked flawlessly.

Reviewed by Odie (Posted on 5/22/14)

ear piece

fits well and works well to suppress loud noises while still allowing conversation. Good product.

Reviewed by gramps55 (Posted on 2/27/14)

EP3 ear pro

They are comfortable and stay in place. I like the the feature that allows you to hear but still blocks higher levels. I will definitely buy more.

Reviewed by Robert Fejes (Posted on 2/22/14)


Very happy with these plugs, not perfect as far as hearing very subtle noises while hunting, but good enough to carry on some conversation if you aren't already deaf and my ears don't ring after shots anymore. Good product

Reviewed by deafhunter (Posted on 2/18/14)

EP3 Sonic Defenders

I just received a set of these on Monday February the 3rd.
I have to say I love these. I was shooting a Ruger 22 pistol and it took the sting out of the pistol's report and made the shooting very enjoyable. They fit in my ears perfectly and are very comfortable to wear for an extended period of time without discomfort.
My wife approached me when I was at my range and I could hear the leaves crunching under her feet between rounds.
I'm very satisfied with the EP3 Sonic Defenders.

Reviewed by Ron 1738 (Posted on 2/6/14)

EP3 work as advertised

I've only used them so far with gasoline powered equipment, but was impressed as to the noise reduction. They worked as well as the full muffs I had been using, and definitely much more comfortable . Also, I like the feature of being able to remove the inserts for better low level hearing. I tested them in this manner with a Fox 40 whistle and found the reduction in the high level audio to be great while still allowing low levels through.

Reviewed by AGL Bob (Posted on 12/27/13)