Final answer:
The most common types of ammunition for rifles and carbines are 5.56 NATO and 7.62 NATO, with 5.56 NATO being a high velocity, small caliber round, and 7.62 NATO designed for long-range and precision shooting.
Step-by-step explanation:
The most common types of ammunition for rifles and carbines are 5.56 NATO and 7.62 NATO. The 5.56 NATO is a high velocity, small caliber round, often used in AR-15 style rifles. The 7.62 NATO, on the other hand, is designed for long-range and precision shooting. It's typically used in traditional battle rifles and sniper rifles. These two are standard NATO rounds, hence they are widely adopted across various rifle and carbine models globally.
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