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Archived [ARCHIVED THREAD] - Upper reciver crack or excess forging
Posted: 11/24/2015 9:26:22 PM EDT
Noticed these these two lines on the back of my upper, are these cracks ? Looks to be a odd place for a crack so I'm assuming forging Marks as it's a non stress area.

Link Posted: 11/24/2015 9:30:13 PM EDT
[#1]
Forging mark.
Link Posted: 11/25/2015 2:11:44 AM EDT
[#2]
Forging or machining mark, don't lose any sleep over it as it's cosmetic and won't effect function.

CY6
Greg Sullivan "Sully"
SLR15 Rifles
TheDefensiveEdge.com
(763) 712-0123

Link Posted: 11/25/2015 9:27:45 AM EDT
[#3]
I agree. Looks like forging marks.  No worries, shoot it

Archived [ARCHIVED THREAD] - Upper reciver crack or excess forging
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