Modern Sporting Rifle Evolution
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BIGGDAWG

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Reply with quote  #1 
I picked up a six8 upper and lower set to do some testing and run the 6.8 GPC in. I also wanted to build a few more uppers for it in our other gpc rounds that we are doing but i couldn't find and stripped uppers from lwrc. so i started looking, measuring and playing and figured out that the bear creek side charge upper had enough metal on it i could open up the magwell portion enough  to get it to work -- the six8 pmag is wider than the standard ar's so the opening in the upper where the mag sticks up into is wider that is why mislpec uppers won't work.

milspec  uppers don't have enough material to mill it wider but any hd upper normally does like the side charge uppers.  I also had to mill a slot on the right side for the ambi bolt release lever as can be seen in the pics. but it turned out well now i just need to build the 20 gpc barrel and do some testing but it all fits on the lower just perfect.

43687237_658213604579538_8828384308621213696_n.jpg  43851536_868501466689074_8924261232937009152_n.jpg  43680927_242113646459439_1146429167617703936_n.jpg  43709446_321630958647421_9114259883053547520_n.jpg 


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MDWS

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Reply with quote  #2 
You sir, are, well, dang.  Awesome.
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RangerJoe

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Reply with quote  #3 
^^ What he said ^^
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kb31416

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Reply with quote  #4 
A coincidence, but bear Creek has (had?) side charging uppers for sale and I bought one yesterday for $119. It is the combo version in 6.5 Grendel, complete with type 2 bolt
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