Welcome to Alpha Z Arms!


Be the first to leave a review!

product code:EP4-BK-MPR



View more from Surefire

availability: In stock


subscribe here for price alerts

Listen To Your Ears. Your hearing health should never be ignored. SureFire EP4 Sonic Defender Plus will protect your hearing against Noise-Induced Hearing Loss (NIHL) without compromising your ability to hear routine sounds or conversations in noisy environments. Their triple-flanged-stem provides a Noise Reduction Rating (NRR) of 24 dB. Safe sound levels are allowed to pass through into the ear canal while potentially harmful noises (above 85 dB) are reduced via our proprietary noise-reducing filter. EP4s include attached filter caps that can be inserted for additional protection blocking out lower-level noise like that heard on an airplane where hearing ambient sounds or conversations isn't critical. Sonic Defenders are made from a soft durable hypoallergenic polymer that provides all-day comfort and extends product life (up to 6+ months depending on usage and care).


  • Provides a 24-dB Noise Reduction Rating (NRR) with filter caps inserted
  • Lowers potentially dangerous noise levels above 85 dB
  • Patented EarLock retention rings utilize seven contact points to lock earpieces in place and fit the same way every time; soft double-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 for superior comfort when worn with a mask helmet or hat or while using a phone headphones or supplemental hearing muffs
  • Serve as earpieces for compatible radio communication systems*
  • Each set is packaged in a convenient carry case and includes a polymer lanyard
  • Note: EP4 earpiece will not provide hearing protection if the noise-reducing filter is removed
  • 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
Type Earplugs
Color Black
NRR 24 dB
Quantity 1 Pair
Style Inside The Ear
AFT Circuit
Compression Circuit
Material Polymer

Leave a Review!

Name: Email:
Review Title: Review: Rating: