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

Manufactured by SureFire
Manufactured by SureFire
52 Reviews

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

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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

Comfy Fit


So far all I was able to do was try them on and they are comfortable. Haven't tested them yet at the range, the reason for the average rating.

Surefire EarPro EP4 Sonic Defender Plus -


Surefire products are the standard, PA sets the mark high in their shipping and service.

Good Price, Great Shipping


The price was about what you would expect, but Primary Arms shipped them out the same day! Awesome customer service!



These are one of the best ear protections I've ever owned I have ruptured eardrums in the past therefore have wear double protection this product allows me to only wear it 1 and the price was awesome buy these products, I give him 5thumbs up..

Sure fire sonic defenders ear plugs


These ear plugs are great for what I do. I use them for work and when I'm out at the gun range. Thanks primary arms for the email!!!

Great ears


These work great and fit comfortably

Good stuff!!


These work very well, fit well, and the price is right, but even after a month of general use around the farm I still have a hard time getting them in my ears! I would actually give them 4.5 stars.

Won't stay in the ear


They appear to be the correct size but will not stay in my ears. They slowly push themselves out after a few minutes. Tried to insert without optional plug in and didn't change the result.



They cancel noise a little too good for normal conversations to take place. will try the EP3 next time.

Good product


They work great.