Undoing Bubba's Work - Kar 88

Описание: Before I had a Youtube channel, I restored a sporterized Karabiner 88 back to nearly it's original configuration.
I recently acquired a second Kar 88, however this one had been very crudely sporterized. The stock was cut down, barrel jacket cut ahead of the rear sight and the buttstock was slimmed down. New front and rear sights were added, and very strangely they were constructed of a mixture of copper, solder and lead.
Why did Bubba modify it in such a way?
And can Bubba's modifications be removed in order for the rifle to be saved?

Tools used:
Propane Torch https://amzn.to/4nUI755
Knipex Pliers Wrench https://amzn.to/4lI97CE
Screwdriver Set https://amzn.to/4lJEKvQ

DISCLAIMER
All subjects featured on this channel are shown for historical and informational purposes only. All gunsmithing work is intended to restore the item to it's original condition, never modifying to serve any other purpose. In no way, shape or form is anything featured on this channel ever intended to be sold at any time. Any messages regarding selling a firearm, ammunition or an accessory will be removed. Everything shown is legal where the creator is located, please check your local laws.

00:00 First Kar 88
01:18 New Kar 88
03:11 Disassembly
03:38 Rear sight
07:28 Front sight
08:33 Bubba's sights
10:06 Bore condition
11:17 Why?
12:18 Barrel jacket