[ARCHIVED THREAD] - Chipped AUG trunnion?

Posted: 7/1/2014 4:21:34 PM EDT

Found this bright shiny spot on the trunnion last time I cleaned the AUG (A3 model, serial 6USAxxx). I don't remember the scallop being there...

I didn't find any extra metal pieces floating around but I'm probably not going to shoot the rifle until I hear back from Steyr USA.

Posted: 7/1/2014 6:59:07 PM EDT

[#1]

Nice pics...

What does the lug on the bolt look like !!

Posted: 7/1/2014 7:17:03 PM EDT

[#2]

I wouldn't know any proper metallurgical or material mechanics terminology, but it looks like it broke where there was a flaw in the physical material.

I imagine your bolt lugs look just fine, maybe a "preexisting" condition in the trunnion just gave way? There doesn't appear to be any other damage or the telltale peening that is seen on the MSAR guns.

Posted: 7/2/2014 7:22:20 AM EDT

[#3]

Yep, that's chipped / broken.

Posted: 7/3/2014 6:30:55 AM EDT

[#4]

I would think they would want to replace it for you. I think not shooting it is probably a good idea. Unlikely to hurt anything but just to be safe...

Posted: 7/3/2014 3:56:50 PM EDT

[#5]

I take that this is a VLTOR made part?

Posted: 7/3/2014 5:01:50 PM EDT

[#6]

Quote History

Quoted:
I take that this is a VLTOR made part?

View Quote

I suspect it's from Austria, like most of the parts on the rifle.

Setting up the broaching and other machine tools to finish the blanks wouldn't be cheap.

H

[ARCHIVED THREAD] - Chipped AUG trunnion?

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[ARCHIVED THREAD] - Chipped AUG trunnion?

[ARCHIVED THREAD] - Chipped AUG trunnion?