The Smith & Wesson M&P15 Pistol features a 7.5-inch barrel chambered in .223 Rem/5.56 NATO with an SBA3 adjustable arm brace for enhanced stability and control.Smith & Wesson M&P15 Pistol Platform7.5-inch barrel length.223 Remington/5.56 NATO caliberSBA3 adjustable arm brace30-round magazine capacitySemi-automatic actionBlack aluminum frame with blued finishSynthetic grip materialWeight: 88 ouncesIncludes one magazineThis compact pistol configuration offers portability while maintaining the reliability and performance of the M&P15 platform suitable for various shooting applications.