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A Tale of Two Crush Washers, or Two Crush Washers One Barrel, and other AR oddities
- Thread starter cmshoot
- Start date
Brand new, factory S&W M&P-15. They forget/failed to install a takedown pin detent spring, so the takedown pin kept falling out.
When I went to disassemble it to correct the issue, I found the most clocked receiver extension that I have ever seen.
When I went to disassemble it to correct the issue, I found the most clocked receiver extension that I have ever seen.
I love seeing these fails…makes my cheap builds look $$$
Shep can you explain this one? I don’t see it. Is the receiver warped?
When the castle nut was tightened, it caused the receiver to clock, or turn with the castle nut. If this forced isn’t counteracted when installing, you’ll end up with a stock the is not inline with the receiver. This can cause issues with the stock seating in the pocket of your shoulder.
The tool that I invented is the green one in the pic. It is specifically designed to keep the receiver/receiver extension/stock in perfect alignment when torquing the castle nut.
Ok so this is something fixable? You just straighten out? Like when
Fatal_Bert
went to straight camp?
Fatal_Bert
went to straight camp?
sure look it
Know what you’re looking at when you buy someone’s personal build.
Bought here on ODT.
-castle nut on backwards
-no receiver end plate
-no detent or detent spring for the take down pin
-no buffer retainer or spring
-receiver extension threads buggered all to hell
Bought here on ODT.
-castle nut on backwards
-no receiver end plate
-no detent or detent spring for the take down pin
-no buffer retainer or spring
-receiver extension threads buggered all to hell
