5.56 mm Suppressors—Average Maximum Sound Pressure Level (dB)

Barrel & Firearm MICRO MINI FA556-212 FA556SA  
20.0 inch M16A4 137 137 133 133  
16.0 inch MRP 139 137 135 135  
14.5 inch M4 141 138 135 135  
10.5 inch CQBR 148 141 137 137  
     Ammunition: M855