SUREFIRE Sonic Defender EP4 size:M 223 caliber and larger

223 caliber and larger

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

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

small caliber patches for

·        Paint pen dot matrix panels on the bottom of the body to allow for identification marking

SUREFIRE Sonic Defender EP4 size:M 223 caliber and largerEP4 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