HB is corrects hold the trigger group on place. The screw on the left side is often missing from these guns.

The cross pin screw should be screwed in far enough that it protrudes on the left side. The screw on the left side then rotates into the notch on the end of the cross screw, locking it in place.

I have three of these style gun, I am missing two of the lock screws. Any have a spare screw or two for me?

But tell us more about this gun. 20000 of Francotte mad action style were made for the ZAR, (and so marked) 2000 of which were carbines. I have both rifle and carbine. The third gun I have is a Francotte short rifle.

My rifle is marked on the Stock as belonging to the Port Elizabeth Town Guard. In 2002 I shoot a Kuda in the hills over looking a reservoir that is the Port Elizabeth water supply with my rifle. During the 2nd Boer War, the Port Elizabeth town guard, guarded the dam there. I have wonder since if my rifle had been there.

I sure would like to see more details of your rifle. Full length and markings of course.