同样是rotating barrel的设计，个人感觉这个没有Grand Power的那个设计精妙，GP是直接把barrel切削成一个螺旋状的斜切面，然后让这个spiral cutout rides on the roller bearing上面，这样就避免了“枪管和闭锁块Metal on Metal接触比较多，如果打得很多很脏不维护，容易卡死”的问题，简单可靠，同时闭锁滚柱还起到了类似轴承的润滑效果
是钢的Chassis外面套了个塑料壳The slide is made of high quality CrNiMo steel, which guarantees a long durability for the firearm. The steel is heat processed to a hardness of 40 - 42 HRC and consequently carbonoxi-nitrided by technology QPQ to 750 HV. The metal container with slide rails is embedded in a plastic frame and is manufactured from high quality CrMo steel and reconditioned by QPQ technology to a surface hardness value of 700 HV. Hardness of the core material of the container is 30 HRC. Barrels are made of CrV steel and treated by carbonitriding to the depth of 0.5 mm. Hardness of the core material of the barrel is between 45 and 48 HRC. Surface hardness of the carbonitrided layer is from 52 to 54 HRC. The frame is made of high quality polyamide GF 30.
您说的是PX4吗？应该不会吧，会不会是recoil spring比较弱的关系？rotating闭锁cycling一般都很快，以下是维基百科上的“has a cyclical rate of fire of 900 rounds/min, the rotating barrel lock has shown itself to be capable of very fast lock times.”。油管上有个视频（是Grand Power的K102），注意1:40和4:28的slow motion，分别是double tap和full auto模式，感觉那个cycle速度不是一般的快啊，PX4应该也是同样的原理吧。
发表于 2019-4-4 06:27
