SureFire EP4 Sonic Defenders Plus - Black - Medium - 1 Pair

Manufactured by SureFire
Manufactured by SureFire
52 Reviews
Add to cart for sale price $12.00 $15.00

In Stock

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The SureFire EP4 Sonic Defenders protect your hearing without interfering with your ability to hear routine sounds or conversations. The triple-flanged stem design fits larger ear canals and provides a Noise Reduction Rating of 24.

Safe sound levels can pass through into the ear canal, while harmful noises (above 85 dB) are reduced via a proprietary design that incorporates a special noise-reducing filter. EP4s 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 triple-flanged stems provide secure seals in the ear canals. A low-profile design means EP4s can be worn while wearing a helmet or mask, or while using a phone or headset.


  • 24 NRR with filter caps inserted
  • Lowers noise levels above 85 dB
  • EarLock retention rings
  • Hypoallergenic, medical-grade polymer
  • Low-profile design
  • 26" polymer lanyard included
  • Triple flanged design for larger ear canals

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Decibel Reduction24NRR
ElectronicPassive Protection
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

52 reviews


Spikes stripper upper


Always have been happy with my service that primary arms provides. Fast shipping everything is exactly what they say it is.

Love these earpro


Best in ear hearing protection available. Comfortable to wear for hours and reusable. I prefer these over peltors.

Surefire EarPro EP4 Sonic Defender Plus


comfortable, works well. Still had some ringing in ears after day at range but that was because didn't notice one side had come loose.

fast delivery


Fast delivery. .. product as shown.. would order again

you can't go wrong with surefire


Great ear protection for work or play!

Sonic Defenders


Great product....great fit



Great value and speedy shipping.

Cool stuff


Have not used them yet! But fit is very good.

So far, so good.


Have only used once, just to try them out. seemed to work well.

Great fit!


I bought these on sale because I wasn't sure how well the mediums would work for me (got fairly large ears). To my surprise, they fit great! I guess it's all about the area of the ear they fit inside, not the overall size of your ears. Anyway, I like them a lot and look forward to putting them to use regularly.