Gun Identification

[Thor]

Ok, so here in Canada, when you buy a gun you have to register it and all that business. I am pretty sure this means that they can check the impression the gun makes on the bullet so they can indentify shells and such or whatever. Anyways, the point of this post, is that I was wondering if it is possible to change the way the gun leaves that impression on the bullet casing after you have registered the gun? I am way too tired to explain this anymore so I hope it makes sense.

[gbu-36]

getting a new barrel and a new extractor would prolly do the work, though Im not exactly a forensic expert.

But that should work to foil most identification techniques.

Might also wanna buy a shell catcher

[Adrian_Faythe]

There's also a way to use a small file or rasp on the inside of the barrel to change the ballistics marks on a spent bullet. Whether this is true or not, I have no idea, but I've heard you can only do it once, and any other attempts will ruin the chamber.

[Armalite]

I've never heard of anyone doing that kind of testing on weapons at the time of registration or purchase. It was discussed as a gun control measure to perform systematice ballistics tests on all guns at the time of manufacture, but I doubt it ever came to anything. It's a waste of money. A new firing pin, extractor, and barrel will result in a completely different ballistics pattern. And the markings on your shells will be new as a placenta covered baby. Or you could say who gives a fuck cause nobody has a record of your weapons ballistics anyway.

[Thor]

Ok, well do they take down any information on the new barrels and things like that? This is merely a hypthetical situation that SWIM has been pondering, how much would a new firing pin, barrel and whatnot set a person back anyways?

[Armalite]

Aside from the serial numbers.......no. And they are given no more attention than the numbers on your cars intake manifold or your DVD player. The prices of firearms parts and gunsmithing tools varies, but check this out and see if it helps http://www.brownells.com/

Ah the wonders of google. You lazy shit.....

[Thor]

VERY Lazy thank you very much!
:gives:
That's what these forums are for... lazy people like me :poke: . Plus it sparks convo and just might get someone interested!

[Th0r]

Ok, well do they take down any information on the new barrels and things like that? This is merely a hypthetical situation that SWIM has been pondering, how much would a new firing pin, barrel and whatnot set a person back anyways?

Firing pin: This kit costs $75
http://www.midwayusa.com/mediasvr.dll/image?saleitemid=280509

http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=280509&t=11082005

Barrel: No idea, in the event of buying a new barrel you would probably need to talk to a specialist...

[davey_crockshit]

Tool marks on the bolt/breech will leave an impression on the primer after firing. One would probably have to change this too, probably by a little polishing and maybe adding a couple of very light scratches with a file afterwards.

As we are discussing Canada, I assume we are talking about rifles or shotguns only. The availability and cost of replacement parts and the ease with which they could be installed would vary greatly depending on which specific model was involved.

With any centerfire rifle, changing a barrel is not for the squeamish. You need a Gunsmith. If you get the headspace wrong, you could wind up blowing your face off.

[Useless_Info]

Whatever happened to just filing off the serial numbers. All of this is expensive i.e new barrel and gunsmithing. As far as I know from a spent shell casing forensics can only tell the make and model of the weapon that it was discharged from. The only way that I know of to connect a positive ID on a specific firearm would be to obtain it after the fact.
Also, I would assume that after using said firearm you would dispose of it. Unless of course your looking for a off the books firearm and the solution to that would be to build your own and acquire a flat receiver and bend it yourself.

[Æhµ]

Nothing like a little bit of necro-posting lol :)

You can also use a caliber converter sleeve to guarantee that any slug or casing left behind at a crime scene doesn't match your firearm, in fact the caliber of whatever they recover would automatically eliminate your firearm from suspicion - assuming you took care to hide or toss the sleeve.

Caliber conversion sleeve (http://en.wikipedia.org/wiki/Caliber_conversion_sleeve)

If they find a .22 slug at a crime scene, and they call on you and only find a .45 acp, chances are they won't look any further. (Unless they're Columbo). H&K make them for some of their firearms.

[livefreeordie]

use a shotgun, no rifling, no ballistics identification possible. and expert can still tell the length of the barrel by the spread of the shot, and the firing pin impression can be an identifier on empty shells, but a pin is easy to alter or change, as well as cheap.

You can significantly change the ballistics with a steel bottle brush down the barrel of a handgun also...

As for registration in Canada... no they do not measure anything your firearms serial number, make and model is recorded along with your license number. It is fairly pointless.

But why on earth would you register a firearm? lol

[Th0r]

But why on earth would you register a firearm? lol

Some people are very, very dim.

[davey_crockshit]

http://www.mcace.com/

Two basic kinds. One for shotguns that fires centerfire ammo from it's own barrel, and one for rifles that uses the existing rifle barrel. I have never had any firsthand experience with these, but from what I hear, .32 acp fired from a full length rifle barrel using one of these is not much louder than a pellet gun.