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M4 carbine

0:35

Slow Motion Video of an M4 Carbine in Action

2:51

Full Auto M4 Carbine

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Accessories for an M4 | Gun Guide

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Philippine Army conducts test-firing of improved M4 rifles

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The Ballad of the M4 Carbine

The M4 carbine is a shorter and lighter variant of the M16A2 assault rifle. The M4 is a 5.56×45mm NATO, air-cooled, direct impingement gas-operated, magazine-fed carbine. It has a 14.5 in (370 mm) barrel and a telescoping stock.