明明上面说的是mid length,但是下面都没提,提到gas的时候说的全是废话:
With the shorter carbine gas system and the increased gas port pressure, the carbine cycled faster, and at times the cycle rate could be faster than the magazine would feed ammunition. One of the modifications done to increase reliable feeding included enhancing the angle and the length of the feed ramps.
考,怎么扯到carbine gas system了?一点也没提到mid length gas system