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Member Section => Down Range Cafe => Topic started by: TAB on May 23, 2009, 05:16:07 AM

Title: crime guns...
Post by: TAB on May 23, 2009, 05:16:07 AM
anyone know what % of them have thier serail numbers removed.


google fu is not working.


I'm guessing its pretty high.
Title: Re: crime guns...
Post by: alfsauve on May 23, 2009, 06:10:27 AM
Pretty hard to conceal s/n.  First they are stamped in several places and secondly the "stamping" causes a compression deep into the metal.  Even after the have been ground/filed "off" so they no longer are readable with the naked eye, metallurgical analysis can still read them.

I'm guessing there are numerous abortive attempts, though
Title: Re: crime guns...
Post by: tombogan03884 on May 23, 2009, 09:23:42 AM
There are chemicals that will react with the metal to make them show up under Black light, I forget which ones though.
As to TABs original question, I have no Idea, but since most guns used in crime are stolen or otherwise illegally acquired and involve no paper work the number may not be that high.
Title: Re: crime guns...
Post by: fightingquaker13 on May 23, 2009, 02:08:46 PM
There are chemicals that will react with the metal to make them show up under Black light, I forget which ones though.
As to TABs original question, I have no Idea, but since most guns used in crime are stolen or otherwise illegally acquired and involve no paper work the number may not be that high.
I think this is the key point. If the gun isn't traceable to you, why bother and risk srewing it up by getting dremel happy? Plus, I believe that just owning a gun with altered serial numbers is a crime in itself. Why take the chance unless its recorded in your name?
FQ13
Title: Re: crime guns...
Post by: blackwolfe on May 23, 2009, 03:37:51 PM
There are chemicals that will react with the metal to make them show up under Black light, I forget which ones though.
As to TABs original question, I have no Idea, but since most guns used in crime are stolen or otherwise illegally acquired and involve no paper work the number may not be that high.

I THINK it is an acid copound and reacts differantly to the compressed metal.   I believe that the tecnichian needs a fairly flat even surface to begin with and may even prep the surface by filing more if neccessary to smooth the surface.  I was told once years ago by an LEO friend that the methods used then only worked if the S/N was just barely removed and the grinding didn't go too deep.  I imagine that modern technology and methods are more successful.
Title: Re: crime guns...
Post by: TAB on May 23, 2009, 04:36:48 PM
The reason I was wondering, is you can't return a gun with a damaged serail number.  basicly all you could is store it or destroy it.
Title: Re: crime guns...
Post by: Big Frank on May 23, 2009, 05:21:44 PM
The MI state police told me that if a gun doesn't have a serial number on it they can stamp one on it. That's if it never had one. I don't know what they would do with one that had the number removed. I'm guessing they would confiscate it.
Title: Re: crime guns...
Post by: TAB on May 23, 2009, 07:12:57 PM
federal law is, if it ever had a serail number, it can never be removed/altered.


before 68 they were not required, you can add one to a gun that was pre 68, but its a paper work nightmare.