SUREFIRE EP4 Sonic Defender Plus Ear Plug EP4-BK-MPR
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SUREFIRE EP4 Sonic Defender Plus Medium Black Removable Cord Ear Plug (EP4-BK-MPR)

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SUREFIRE EP4 Sonic Defender Plus Medium Black Removable Cord Ear Plug (EP4-BK-MPR)
SUREFIRE EP4 Sonic Defender Plus Medium Black Removable Cord Ear Plug (EP4-BK-MPR)
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SUREFIRE EP4 Sonic Defender Plus Medium Black Removable Cord Ear Plug (EP4-BK-MPR)
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Features of SUREFIRE EP4 Sonic Defender Plus Ear Plug EP4-BK-MPR

  • 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, triple-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
  • 26" polymer lanyard included

Product Info for SUREFIRE EP4 Sonic Defender Plus Ear Plug EP4-BK-MPR

The EP4 Sonic Defender Plus protects your hearing without interfering with your ability to hear routine sounds or conversations. Its triple-flanged stem design fits larger ear canals 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.

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 Plus 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.

Comfortable EP4 Sonic Defenders Plus also serve as earpieces for compatible radio communication systems* simply by removing the noise-reducing filter and attaching the earpiece to the system. NOTE: EP4 earpiece no longer provides hearing protection once the noise-reducing filter has been removed.

EP4 Sonic Defenders Plus 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.

*RADIO COMM SYSTEM COMPATIBILITY: 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.

GritrOutdoors is an authorized Surefire dealer


EP4 Sonic Defender Plus
Product Type:


Noise Reduction Rating 24dB (with filter caps inserted)
Color Black
Size Medium
Filter Yes
Stem Triple Flanged
Radio Comm Compatible Yes
Included Lanyards Detachable
Features Fits larger ear canals

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