The BRG-15 had conventional, gas operated action with rotating bolt, locking into the barrel extension.

该担心现有- 15接受传统，燃气经营与旋转螺栓行动，延长锁入桶。

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In this action bolt has two frontal lugs that engage the barrel extension, which is screwed onto the barrel.

螺栓在这次行动中有两个是从事前沿耳桶扩展，这是到每桶拧。

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It has the same simple blowback action with bolt that telescopes around the rear part of the barrel.

它具有相同的螺栓简单的反作用的行动，望远镜周围的枪管尾部。

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All the other parts are purchased and the critical components like the barrel and bolt and springs are all metal.

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