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

Manufactured by SureFire
Manufactured by SureFire
52 Reviews

Out of Stock

NOTE: Limit 5 per household. Quantities exceeding 5 will not allow checkout.



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

See More


Decibel Reduction24NRR
ElectronicPassive Protection

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

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.



I got these to wear under my ear pro for extra protection. Fit better than foamies and easier to put in and take out.

Not what I expected


I guess I should not have been surprised given the low price. The pictures on the website are nice and the product looks the same, but these plugs are kind of flimsy and will probably not last long. Surefire makes great flashlights - they are not my go-to for ear plugs.

Sonic Defenders Plus


I have always used muffs of some kind, and recently purchased a set of Howard Leight muffs which are awesome. However, they are bulky. Thats where these come in. No trouble shouldering the rifle anymore, and no loud noises. Will buy these again.

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.



I love these things. They allow you to get a perfect cheek weld unlike traditional over the ear protection and provide adequate sound reduction. I went with size Medium and they fit well.

Great product


I purchased the Surefire EP4 sonic defenders because I needed some new ear protection for shooting. Comfortable to wear and don't get in the way. Primary Arms had a great deal and shipping was fast.

Not perfect but nice to have for the go bag


I wouldn't wear them at the range but to have in your go bag for a SHTF situation, they'll really help.

Unaware but ok.


Ita a good product, I was just unaware that they are not a long term solution. They company says that they will last about 6 months, but I bet they will go longer and at this price, that is still ok with me.

Carry anywhere hearing protection


Perfect fit, light weight and no batteries mean these little guys can go in your range bag or vehicle and you never do without.Made great stocking stuffers as well.

Best hearing protection for the price


Possibly one of my favorite products by Surefire. I really don't use anything else for hearing protection these days

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!!!