Aimed at the feeding spring in magazine mechanism, the method that focuses on reducing assembly height of feeding spring was put forward on the basis of satisfying the ammunition feed betimes.

针对弹匣中的输弹簧，提出在满足供弹及时性的基础上，把设计重点放在减小输弹簧装配高度上的思想。

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NBC's David Gregory was recently investigated for holding a banned ammunition magazine on the network's "Meet the Press" program broadcast from Washington.

CNN: 'Enough is enough,' Feinstein says in proposing new gun ban

Over the past weekend, Defense Distributed successfully 3D-printed and tested an ammunition magazine for an AR semi-automatic rifle, loading and firing 86 rounds from the 30-round clip.

FORBES: Gunsmiths 3D-Print High Capacity Ammo Clips To Thwart Proposed Gun Laws

Washington (CNN) -- No employees of NBC will face criminal charges over the display of a high-capacity ammunition magazine on a "Meet the Press" program in violation of local law in Washington, prosecutors told the network on Friday.

CNN: No charges over NBC ammo clip display