?? ??? ???????????????20???????
![](https://image.chezhanri.com/2019/0715/20190715142733485.jpg)
????:1???????:?????????
2????????
3?????????????
4???????????
5????????????
??,???????5???,???????????,13????????????????????20?????????????????
13??????,??,??????????????????????????,???????????????AR-15?????????????????,?????????????????????
??????,??,?????????????????????????????,?????????????????????,?????????????????????(?????? ?)
???????????????????:???????????