***SOLD! SOLD! SOLD!*** Looking to unload this Proof Carbon AR15 barrel, specs are as follows: -18” length -1:7 twist -Rifle length gas system -M4 feed ramps -muzzle threaded 1/2x28 Barrel was installed but not fired by first owner. I purchased it and would love to use it, but could use the funds. I’m asking $725 shipped w/ BNIB Geissele gas block or $700 w/o gas block. I also have an 18” WOA SPR 18” barrel listed. I’ll be keeping whichever doesn’t sell first, so act quick!