Criterion DPMS PATTERN 308 HYBRID BARREL, RIFLE GAS, nitride, 18" 1-10 twist. Dimpled 0.5” spacing for SA gas blocks. A bit of Loctite residue on the muzzle threads. I bought this lightly used from an ARFCOM member and I’ve put less than 200 rounds on it since getting it. I’ve got some ammo I’ll be getting rid of as well if you’re interested. $225 shipped and insured to the lower 48 through PayPal F/F or add 4%, or Zelle or Venmo.