本帖最后由 SlowShooter 于 2017-10-1 23:51 编辑
至少你的223go gauge应该都能合膛， 推一下forward assist看看
http://weaponsman.com/?p=604
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.223 Remington and 5.56×45 Chamber Differences The most important difference between .223 and 5.56 chambers is the length of the throat (or leade) for each chamber. More specifically, the leade is located at the mouth of the barrel before the rifling occurs. Comparing the NATO and SAAMI regulations, the leade for 5.56 chambers is nearly twice as long as that of a .223 chamber (.162in to .085in, respectively). If a 5.56 round contacts the barrel rifling too early, it can cause pressure spikes (leading to malfunction, and potentially damage) in the chamber. This explains why it is safe to fire .223 through a 5.56 chamber, but not recommended to fire 5.56 through a .223 chamber.
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发表于 2017-10-1 21:22
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