Firearm
Bolt action

Bolt action is a repeating (and rarely single-shot) action that is operated by directly manipulating the bolt via a bolt handle. The bolt is unlocked from the receiver, then pulled back to open the breech, ejecting a cartridge, and cocking the striker and engaging it against the sear; when the bolt is returned to the forward position, a new cartridge, if loaded, is pushed out of the magazine and into the barrel chamber, and the breech is re-locked.

Two designs of bolt action exist: rotating bolt, where the bolt must be axially rotated to unlock and lock the receiver; and straight pull, which does not require the bolt to be rotated, simplifying the bolt action mechanism and allowing for a greater rate of fire.
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