| http://www.w3.org/ns/prov#value | - The FA556-212 suppressor adds just 4 inches to the original length of your AR-15, C8 SFW, HK 416, M4, M16, SA-80, or other rifle, yet it provides superior sound suppression???even firearms with 10.5 barrels using standard M855 ammunition have their average maximum sound pressure level reduced to well below the OSHA 140-decibel safe level Chosen by the US military, SWAT teams, and law enforcement
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