SUREFIRE Sonic Defender EP4 size:M and spill resistance

and spill resistance

Premium type HAIII hard-anodized anti-abrasive finish

Removable custom fit EVA insole

and extends to the front of the shotgun receiver (5 inch rail)

The MOE M-LOK  forend is longer than the factory forearm

SUREFIRE Sonic Defender EP4 size:M and spill resistanceEP4 Sonic Defenders Plus protect your hearing without interfering with your ability to hear routine sounds or conversations. Their 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