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In page Bolt action:

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All four differ in the way the bolt fits into the receiver, how the bolt rotates as it is being operated, the number of locking lugs holding the bolt in place as the gun is fired, and whether the action is cocked on the opening of the bolt (as in both the Mauser system and the Mosin Nagant system) or the closing of the bolt (as in the Lee–Enfield system). The vast majority of modern bolt-action rifles were made for the commercial market post-war, numbering in the tens of millions by Remington in the unique, and most accurate[citation needed] Model 700, two of the others use the Mauser system, with other designs such as the Lee–Enfield system and the Mosin Nagant system, of only limited usage.