This Silencer Hazard Map Brief documents the free field blast overpressure hazards from the Battle Born Supply Co. Whiskey Quebec 5.56 silencers (Purged and non-purged) fielded on the 14.5-in M4A1RIII AR-15 semiautomatic rifle firing M193 55gr 5.56 NATO ammunition, as evaluated in technical Report 6.206 and Report 6.207 and as tabulated in record numbers 7.1.234 and 7.1.235 in the Rankings, respectively.