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I'm not so sure it was a repair. It does look like the gas block is a welded-on assembly, at least for this commecial IJ, not machined as in a military barrel.Looks like a weld-fix that just split again... and not surprising that it did!
You should be able to find a replacement.
Also, if you use advanced edit, you can change the misspelling "Stip" in your title to "strip" which would be cool.
Well I said it looked like a repair because of the bubbled and eneven appearance of the weld... if thats original it was VERY shoddy work to begin with!
It looks like the original weld was defective. No penetration on the gas block.
It is probably safely repairable if you can find someone who is handy with TIG.
Jack
Looks like a weld-fix that just split again... and not surprising that it did!
Any chance of getting your money back for that abomination?