Update 19-05-2019 Sight, larger and a base is added.
Thanks for all your feedbacks!! I've erased all the other updates files, and I'll try to use just this one to upload new updates and upgrades, as we have more information.
Nimrodt and Jaro_Krieg, had been nicely given me retro fit, And that's exactly my thoughts, the base for the Blaster was indeed the Bergmann No. 1, but the handle problably came from the Bergmann no. 3 from 1896.
The whole blaster (Updated) is here:
So, thanks to all, and be pending for further updates!!