The Ballistics tests are so the firearms can supposedly be traced in case of criminal activity.
I had to take my firearms to the police ballistics lab and they carry out the tests.
Walli Mohamed, owned a gun shop of Nairobi for many years, so its not unusual to find ammunition or firms transfered onto a permit.
Its been a few years since I was at his place as its little out of the way f0r me, but am its still there combined with a metal fabrication shop in the back. Now that you jog my memory I am still using the gun safe he made for me.
I have added some photos of my current firearms license for both Kenya and TZ, am sure you can see its very much unchanged.