[smokingfrog]

Guns without serial numbers can’t be traced. How many of those have been found in the possession of drug dealers?

[smokingfrog]

ATF can’t trace thousands of guns that land in Mexico

[Chode]

there are three kinds of guns without serial numbers...

1) the number has been scratched off/obliterated and can sometimes still be found by grinding it down to the bottom of the scratching and still be reveled by optical means

2) those that have been ground off and still might be reveled by the same method

3) and those that never had serial numbers put on them when they were made

i'd like to know what kind they are referring to