Which rifle is longer overall when the buttstock is closed?

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Multiple Choice

Which rifle is longer overall when the buttstock is closed?

Explanation:
The length difference comes from fixed versus collapsible stocks and barrel length. The M16A4 has a longer fixed stock and a longer barrel, giving it a substantial overall length (about 39 inches). The M4 Carbine uses a shorter 14.5-inch barrel and a collapsible stock; with the stock collapsed, its overall length is much shorter (around 29–30 inches). Since the buttstock is collapsed, the M4 is shortened, while the M16A4’s fixed stock doesn’t shorten, so the M16A4 ends up longer.

The length difference comes from fixed versus collapsible stocks and barrel length. The M16A4 has a longer fixed stock and a longer barrel, giving it a substantial overall length (about 39 inches). The M4 Carbine uses a shorter 14.5-inch barrel and a collapsible stock; with the stock collapsed, its overall length is much shorter (around 29–30 inches). Since the buttstock is collapsed, the M4 is shortened, while the M16A4’s fixed stock doesn’t shorten, so the M16A4 ends up longer.

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