As Lakey says, the 2 hole trigger blocks had their weight measured at the factory and stocks stamped accordingly - what attention to detail! I agree with Lakey's view about not setting the adjustable triggers too light and would add that some of the 2 hole triggers I have tried have been among the crispiest pulls I have encountered on between the wars BSAs. In fact I have never encountered a poor one - at least I don't remember doing so.
John
Currently looking for Baikal Makarov pistols with the following prefixes to the serial number: 98, T01, T09, T21, T22
Prefer boxed or cased but will consider loose examples too.