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M4 carbine - Wikipedia
The M4 carbine was never meant to be a primary infantry weapon
SAT: The History of the Army's M4 Carbine and the Wars It Went To
Collecting the M4 Bayonet: Made for the M1 Carbine
USA - Second World War Era Bayonets - worldbayonets.com
The M4 Carbine: The Fighting Rifle (Arguably) Perfected
M4 Carbine: A world’s most popular special operations forces rifle
The M4 Carbine: Aged to perfection - Interesting Engineering
The M4 Carbine - Armorama™
The StG-44: Nazi Germany's Assault Rifle That Help Inspire the M4 ...