Had this mounted on a Rock River AR that I never shot and ended up giving to my son-in-law to use in his Law Enforcement duties. Comes with CM-203 Cantilever Ring Mount. Both are essentially brand new. 600.00 OBO includes shipping in CONUS. Will add cash to trade for Proof Sendero contour barrel in 6.5 (8 twist) or 30 (9 twist).