SN: GSA23534. Modern production, 9mm with an 8″ threaded barrel. Bore is excellent. Slovakian made semi-auto tactical pistol with a Sig Sauer ROMEO7S red dot optic, front & rear flip-up sights, side-charging handle, picatinny accessory rail w/hand-stop, MLOK handguard, ambidextrous controls, SB tactical side-folding brace, and matte black finish. Overall condition is excellent.