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Discussion Starter · #1 ·
My understanding is that if I want to run my Zenith as a sear host, I need to weld a shelf over the pin hole in the receiver and then remove the full auto carrier block at the rear of the receiver. I know adding shelves are a common procedure, but does anybody have any experience removing the block?
 

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The Librarian
MP5-N and HK23E-K
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5,735 Posts

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The Librarian
MP5-N and HK23E-K
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5,735 Posts
Wow, really interesting read. Do carrier blocks differ between Zenith versions? Does the SP5K have a block as well?

The ATF is such a mystery.
The earlier ATI MKE have different style carrier block than the Zenith MKE, but do the same thing. Even the SP5K will keep the F/A carrier from being inserted into the receiver except it has a small pin at the top of the receiver.
 
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