[glockeglock]

Greetings. An expert testified that the markings left on a 40 caliber bullet casing is similar to that of a Glock. I would like to know what that other gun is.

A third person (not the expert), reporting about what the expert testified, said, "It was a gun made for a very short period of time in the early '90's, I think it was Smith & Wesson made a gun that leaves similar markings to a Glock."

Sorry, that's all the info I have. What gun maker's barrel would leave "similar markings to a Glock" 40 caliber?

Thank you,
GeG

 

[SNH Glocks]

I think that would be the Sigma

 

[glockeglock]

I think that would be the Sigma

This is what I thought at first, but the Glock has polygonal rifling and, according to my reading, the Sigma has traditional cut rifling.

 

[SNH Glocks]

The type of rifling would not affect the markings left on the casing.

 

[glockeglock]

The type of rifling would not affect the markings left on the casing.

Oh. That seems to obvious now. Thank you.


What parts do leave identifiable markings on a casing?

 

[thedave8]

Oh. That seems to obvious now. Thank you.


What parts do leave identifiable markings on a casing?

firing pin....extractor......even breechface....

 

[Lord Palmerston]

Glock`s firing pins leave a very particular marking on the primer, like no other handgun. Kind of a rectangular indentation versus the round markings left by other non Glock guns.

 

[AustinTx]

Glock`s firing pins leave a very particular marking on the primer, like no other handgun. Kind of a rectangular indentation versus the round markings left by other non Glock guns.

I was beginning to wonder, if anyone ever noticed that.

 

[SNH Glocks]

IIRC early S&W Sigma Series pistols had a firing pin and breech firing pin hole that was exactly like the Glock. They have since gone to a round firing pin.

The Sigma pistols were pretty much Glock ripoffs and if I'm not mistaken Glock won some litigation against S&W. This may have resulted in the change in the shape of the Sigma firing pin.

 

[glockeglock]

Very helpful. Thanks, guys!