Bolt body strange marks

[Matt K. 0]

Gents,

Pulled this bolt out of the bubba'ed rifle. There are two areas on the body that look like cracks or weld marks(?). Are these common? Never seen them before? Unsafe?

Thanks.

R/Matt

[Joseph Scott 0]

I have never seen such on a bolt. Looks like a weld to me. The angled file marks are not normal. Find a welder with dye penetrant and have him check it.

[Matt K. 0]

It is the bolt carrier, not the bolt itself.

[ryche_me 0]

Those are wierd Gotta agree with Joe You could also have it magnafluxed at a engine rebuild shop to see if the cracks still extend to the inside.

Good luck

Ryche

[Matt K. 0]

I have a metallurgical lab where I work. I dropped it off today. I of course got 10 different opinions from 10 of my work buddies. The lab folks will give me the real skinny (your tax dollars at work!).

[dash 0]

Are those even real welds? Looks like someone stuck it back together with JB weld.

[Matt K. 0]

Just got the bolt back. What you see (and this is how it was explained to me) is porosity left from the weld. Material was welded in a lump and then ground down and polished. I have been told there are no cracks, but the new material is a bit softer than the original steel. I am not sure I would want to shoot it, but apparently the guy who owned the gun did.

[emmagee1917 0]

I believe Numrich still has the two bolt / carrier sections in stock. Just over $100 for the front and around $75 for the rear , IIRC.

Chris