Ordered, thanks.

speaking of sights, and sorry if this is a hijack, but does anyone know what size the nuts on the front and rear sights are?  I've tried both metric and standard and neither catch.

TIA

This new Grab a Gun mag, is it the 6 hole or the 4 hole?

Also, dumb question maybe, but, what's holding my stock mag together?  It looks like a rivit on the baseplate.  Not a screw, not a torx.  What the heck is that thing and how do I take it out?

Thanks in advance.

Hello all.

Just purchased an R51 after finding this forum and thought I'd join in. 

Saw this gun a couple years ago and dismissed it because of all the bad press.  When Rem announced their BK I took another look.  Bad reviews were still there but looking a little deeper there were some positive too.  After reading this forum I came to the conclusion that the gun's fine, it's the magazines and magazines are fixable.

So thanks to the members here for tweaking and posting.  I think this will be a good one.