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Old 03-16-2019, 09:56 PM
A Seabee A Seabee is offline
Join Date: Feb 2016
Location: Калифорния
Posts: 509
Default Underwood 2.85M receiver rail crack

I was working on a friends Carbine. He was complaining that the slide and bolt flew out after firing a few rounds. found this. He told me that many years ago the slide and bolt were replaced because the bolt cracked and damaged the slide. This is a paperweight now, right? I guess I'm going to try and help him find another receiver or barreled receiver at this point.
Any ideas?

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Old 03-16-2019, 10:52 PM
MustangMan MustangMan is offline
Join Date: Dec 2012
Location: Tampa Bay
Posts: 565

Originally Posted by A Seabee View Post
this is a paperweight now, right? I guess I'm going to try and help him find another receiver or barreled receiver....
I would not knowingly use a receiver with a crack in it like that. Just my opinion....
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Old 03-16-2019, 10:55 PM
USAF Sarge USAF Sarge is offline
Join Date: Sep 2014
Location: Panama City, Florida
Posts: 593

Wow is all I can say..........
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Jan 86 - Sept 08
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Old 03-17-2019, 05:35 AM
rcolarco rcolarco is offline
Join Date: Oct 2009
Location: Oblong state west of the Mississippi River
Posts: 4,388

It can be repaired by welding. A very good gunsmith repaired one just like this for a friend of mine. Two caveats:

1. Repair will be expensive. It takes significant skill and labor.

2. The crack speaks to the quality of the entire receiver. It may fail again. The carbine cartridge does not stress the receiver much. If the receiver cracked once, it may still be defective and may crack again.
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Old 03-18-2019, 03:00 PM
heckinohio heckinohio is offline
Join Date: Jan 2010
Location: SE Ohio
Posts: 2,119

I had an Underwood receiver to crack in the slot for the op rod.

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