I don't need to tell you this, but for the uninformed, NOT by design. My questions would be: "What kind of projectiles are you using General" and "how are you loading these rounds"?? Factory FMJ rounds are not that destructive compared to, say, the hollow-point order recently bought by the Executive Branch. Then there's the issue of rifling, which make the AR platform more accurate, but less destructive than military M-16 rounds that are designed to tumble and cause maximum damage. They don't tell you about that little fact either when describing ARs as "military-style assault rifle", which is true only in appearance.