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AR-15 assault rifle, also known as the M4 Carbine chambered in caliber 5.56mm (.223 Stock Photo - Alamy
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M4 Carbine Isolated On White Stock Photo - Download Image Now - Ammunition, Ammunition Magazine, Arm - iStock
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Amazon.com: VMS Racing AR-15 M4 M16 Black 50 Cal Caliber Bullet Antenna Anti-Theft and Reception Booster Heavy Gauge CNC Billet Aluminum Short Compatible with Toyota FJ Cruiser : Electronics
![AR-15 assault rifle, also known as the M4 Carbine chambered in caliber 5.56mm (.223 Stock Photo - Alamy AR-15 assault rifle, also known as the M4 Carbine chambered in caliber 5.56mm (.223 Stock Photo - Alamy](https://c8.alamy.com/comp/R06M5C/ar-15-assault-rifle-also-known-as-the-m4-carbine-chambered-in-caliber-556mm-223-R06M5C.jpg)