| 11. | The proprietary bolt is a three-lug design that locks onto the barrel extension leaving the upper receiver unstressed.
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| 12. | After firing a round, the initial recoil impulse drives the barrel, barrel extension, and bolt to the rear.
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| 13. | Megatron, the Decepticon leader, originally transformed into a realistic Walther P38 pistol with stock and barrel extensions and scope.
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| 14. | It has five interchangeable parts : a barrel extension, flip up sight, dual-mode light beam, stock and main blaster.
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| 15. | The bolt is held in battery by two sliding cylindrical rollers that engage locking recesses in the barrel extension.
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| 16. | The Model 1200 was the first shotgun to utilize a rotary bolt with four locking lugs secured within the barrel extension.
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| 17. | While the bolt and barrel are returning forward, a cartridge-rammer lever, mounted on the barrel extension, pivots forward, loading a fresh cartridge.
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| 18. | As the bolt's locking lugs move past the barrel extension, the cam pin twists into a pocket milled into the upper receiver.
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| 19. | This twisting action follows the groove cut into the carrier and forces the bolt to twist and " lock " into the barrel extension.
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| 20. | The bolt continues pushing the round into the chamber and locks up when the lockring rotates and locks the bolt and barrel extension together.
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