Sounds like you having some fun there, Kaiser2007.

While I haven't used any of the products you mention except Remington cartridges (very good), I must say those mounts are the toughest-looking ones I've ever seen, and the scope looks very high-tech with so many knobs.

I'm afraid I had a bit of trouble working out your text, though. Although I speak a little French and German, I have given up trying to write letters in those languages because it never comes out right. These days I Google Babelfish or whatever free translation website I can find.
They do not handle technical terms very well, though, so, with your indulgence I'd like to suggest and/or question some of the things I think you're referring to.

'open breech sight': open sights? The one nearest the breech is the rear sight, the one at the muzzle is called the fore sight or front sight.

'For aiming a slat was used for fastening of optics on a base Weaver': does 'slat' mean a scope mount?

'the equipment of shop(unremovable)': the box magazine?

'hinge plate of the gunpowder': floorplate of the magazine?

'pelt': load?

'petting': shooting?

Good luck with it all
- Paul