短行程活塞在81式上就用了，加上减小导气管和枪管的间隙，81式可靠性和射击精度都极为出色

来源: 奔流12959 于 2025-09-05 21:23:28 [旧帖] [给我悄悄话] 本文已被阅读：次

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