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Rivet countersink question

1262 Views 2 Replies 2 Participants Last post by  HuecoDoc
I don't have my parts yet, but I am reading tutorials to get a handle on things. My plan is to build from a 100% KMP plate. My rivet experience is confined to one AK build.

If the rivets are countersunk on the inside so that the rivet head sits a little below the surface, what keeps the rivet from being loose? Does the rivet head flatten up against the bucking bar and shank metal expand to fill the gap? Hopefully that makes sense.
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Thanks, that makes more sense to me. I had some trouble with a few on the AK but didn't have any special fixtures, and set them with a hammer. I may try air tools on this because they look stout.
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