电钻是个好办法！
刚刚在这个帖子 http://www.sksboards.com/smf/index.php?topic=18494.0;wap2 上看好像活塞不需要运动那么远。
Off the top of my head, the op rod should protrude into the receiver area about 3/4" when fired. It violently pushes the bolt carrier back.
The gas piston moves inside the tube about the same and does NOT go past the holes in the tube. Those hole are to relieve back pressure inside the rear of the tube when the piston compresses the air.
放狗搜了一下底火击穿，有人列出了一些可能：
- Bad headspacing
- Over-pressure *or* under-pressure rounds (for this gun)
- The firing pin is set too long
- bad bolt with an oversize & chipped FP hole http://www.thehighroad.org/archive/index.php/t-663009.html
发表于 2014-3-3 07:24
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