请问楼主一个问题,我看uspsa有说道 Current rules remain in effect –You may replace the slide with an OFM or aftermarket slide which is of the same length, contour and caliber as the original slide for that model of gun. 所以是不是指如果你的枪是4存管,换aftermarket slide 的时候必须是4寸?还是可以换成5寸。我也想打这个组别在研究。谢谢楼主