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

fit not great


I have not worn them on the range yet but have tried them during a dry fire session. They are not as comfy as custom plugs, but these are tolerable,especially for the price

Good fit and good noise reduction


Very portable and compact works better than the disposable foam type & the other standard hearing protection.

good product


No complaints. Fast shipping.



Works great, the medium fits my wife. So if you have large ears, buy large. The small's fit my kids of ages 5 and 7.

Great Ear Protection


I like these much better than wearing ear muffs. For me, these are just as good and they don't get in the way.As always, Primary Arms is a great company to do business with.

Not yet.


My apologies to Surefire. I have yet to use the EP4s that I purchased. If they work as good or hopefully eve better than the EP3s I currently use then the rating will go up. But for now they get 3 stars.

Surefire hearing protection


Best deal online super fast shipping and a great product!

Did not function as well


These did not work for me with the red plugs in left my ears ringing.



They are fantastic! The first pair I purchased was the EP3. This weekend headed to the range and I had misplaced them. Found the EP3 and took them. Thy are great also. That's why I'm back got to get another pair at this price I am not turning everything upside down to find the ones I misplaced. They will show up as soon as the new pair arrives!


by -

Very hard to get in quickly for me. Otherwise they work ok.