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OSS makes a special suppressor for my HK MR556 that looks very nice and shooting 5.56mm NATO full power rounds comes in at 137DB, making it ear safe (The 140DB is the OSHA cut-off for peak or impulse noises such as gunshots)Only down side is the cost:http://kitup.military.com/2014/01/hk-rifle-features-oss-silencer.html
OSS makes a special suppressor for my HK MR556 that looks very nice and shooting 5.56mm NATO full power rounds comes in at 137DB, making it ear safe (The 140DB is the OSHA cut-off for peak or impulse noises such as gunshots)
Only down side is the cost:
http://kitup.military.com/2014/01/hk-rifle-features-oss-silencer.html
