Basically a Self Shucking 20" 6BR...which ain't a horrid place from which to operate.
Hint...............(grin)
Where are you getting the 20" 6mm upper ?
Black Hole Weaponry/ Columbia River Arms
I thought it read "What are you getting".(grin)
BHW and/or AR Performance....................
I figured to be stupid, so just walked away
Thank you gentlemen