This is a Smith & Wessom M&P 2.0 semi-automatic pistol in .45 acp caliber. It has a 4.5" barrel, fixed 3-dot sights, ambi-thumb safety, ambi-slidestop, light rail, and interchangeable grip inserts. This pistol is in VERY NICE condition in the original plastic hardcase with manual, cable lock, two 10-round magazines, and 4 grip inserts.