98K is a great rifle and the Mauser action by nature is very strong.
As mentioned before, I would not alter a 98K:
It took me 17 years to build this collection:
I set out to acquire the main battle rifle for every WW2 Combatant. ( Although involved, I kind of left Italy and France out. I'll add them if I come across them but, they really were not the main players)
The prerequisite was to be un-mutilated, all headstamps and markings complete (Including German "Nazi" Waffenmat and Japanese Imperial Chrysanthemum). They all had to be built in 39-45.
The Top is my 44 Built Springfield M-1 Garand
Next is 1943 Mosin Nagant M44
Then 1943 IV Lee Enfield
Then 1941 Mauser 98K
And Finally 1944 Arisika Type 99
The hardest to get was the 98K in actuality. Most of the 98's had the Waffenmat's gouged out of the barrel after the war since they had the "Nazi" Reich Mark. I also was able to get vintage 98K ammo with the Waffenmat stamps (but dont use it)