The M16A2 rifle, developed by Colt, incorporated significant improvements over the M16, notably influenced by the U.S. Marine Corps. Key upgrades include a heavier barrel for M203 compatibility, a 'birdcage' flash hider designed to reduce dust, a brass deflector for left-handed shooters, and an improved drum-style rear sight. It also features a three-round burst fire mode instead of full-auto and was optimized for the M855 'green tip' cartridge.
This video demonstrates the modularity of the AR-15 platform, focusing on the ease of swapping upper receivers to change calibers and configurations. It showcases various upper types, from standard A2 to specialized free-float handguard models with extensive rail systems. The presentation highlights the vast caliber range achievable, from .17 Rimfire to .50 Beowulf, emphasizing the AR-15's adaptability for diverse shooting needs.
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