A TYPICAL AR-15 round (55 grain FMJ like NATO M193) out of a TYPICAL length AR-15 (16" barrel) will not be traveling 1006 m/s, or 3300.525 ft/s. It will be closer to 3100 ft/s, perhaps as low as 3000 ft/s depending on manufacturer and location conditions. Even out of a 20" barrel 1006 m/s exceeds design specs of M193.

A TYPICAL AR-15 round (55 grain FMJ like NATO M193) out of a TYPICAL length AR-15 (16" barrel) will not be traveling 1006 m/s, or 3300.525 ft/s. It will be closer to 3100 ft/s.