SMITH & WESSON M&P40 CO2 Airsoft Pistol

1 small & 1 large backstrap included , Smith & Wesson M&P40 6mm Airsoft Pistol , CO2 housed in the drop-free magazine , Adjustable Hop-Up , 15 Round Drop Free Magazine , Integrated Accessory Rail , Interchangeable Backstrap , 290 FPS with .20 gram BBs , Blowback Action , Three Dot Combat SIghts