Type 81 scope mount installation: 3barD mount (lesson learnt)

0:00-0:35, intro;
0:35 - 3:56, dissembly;
3:56- 05:28, installing trigger group;
05:28-09:13, hammer installation;
09:13-11:44, locking plate installation;
11:44-13:25, safety installation;
13:25- 17:58, side mount installation;
17:58 - 18:25, reassembly;
18:25 - 19:45, final remarks (comment on the side rail I have).