Hey guys,
I just picked up a new 14.5" pinned and welded AR upper. It showed up yesterday and I planned to throw an optic on it last night and test it out at the range today.
Out of curiosity I looked at it with my borescope before doing anything with it. I'm glad I did. I'm not sure what went wrong here but there is a protrusion at the location of the pin & weld. It's difficult to get a sense of scale or depth from the screenshot, but in the video you can see that it protrudes quite a bit, maybe 2x the height of the lands? I'm not sure what kind of issues this would cause but it can't be good for stability or accuracy.
I'm planning to contact the manufacturer and I expect them to make things right. I understand that QC issues are inevitable, so I'm not going to drag their name though the mud.
Just sharing this because I thought it was interesting and a good reinforcement for the habit of always inspecting things before you test them.
I just picked up a new 14.5" pinned and welded AR upper. It showed up yesterday and I planned to throw an optic on it last night and test it out at the range today.
Out of curiosity I looked at it with my borescope before doing anything with it. I'm glad I did. I'm not sure what went wrong here but there is a protrusion at the location of the pin & weld. It's difficult to get a sense of scale or depth from the screenshot, but in the video you can see that it protrudes quite a bit, maybe 2x the height of the lands? I'm not sure what kind of issues this would cause but it can't be good for stability or accuracy.
I'm planning to contact the manufacturer and I expect them to make things right. I understand that QC issues are inevitable, so I'm not going to drag their name though the mud.
Just sharing this because I thought it was interesting and a good reinforcement for the habit of always inspecting things before you test them.