Gun already comes with match grade barrel that can handle 45super. I have upgraded slide spring and mag springs to accommodate the heavier loads. Comes with 2-13rd mags and 2-9rd mags both with pinky extensions (original base plates included) two sets of original slide springs. Original magazine springs. Extra fiber optics. Set of tritium sites, not installed. Two extra striker retaining pins. Extra striker spring guide. Slide release on gun has been Polished smooth, Extra original slide release included. 45 cleaning snake and snap caps. All in a hard case with all original back straps included. Over 500 rounds of ammunition, 200+ are Self-defense rounds, Mostly from Underwood ammo. 60 or so rounds are 45super. Must have a valid North Carolina drivers license, and concealed carry permit.