I have just recently had a 308 GAP AR-10 built by gap. Specs are:
24" Bartlein 1/11.25 twist with badger break
Daniel defense handgaurd
Dpms upper and lower
Magpul PRS Stock
I have been running several handloads in this rifle and they have been shooting decent. I have run 43.5g IMR 4064, 210...