Smith & Wesson Response, Semi-automatic, AR, 9MM, 16.5" Barrel, Threaded 1/2x28, Black Oxide Finish, Black, Polymer Upper/Lower Receiver, M&P Grips, Free Float M-LOK Handguard, Collapsible Stock, 23 Rounds, 2 M&P Magazines, 2 FLEXMAG Adaptors For GLOCK and Smith & Wesson Magazines 13797 • Action: Semi-Automatic • Capacity: 23rd • Finish: Black • Sights: No Sights • Barrel length: 16.5 • Overall length: 32.1 and 35.3 • Falt Face Trigger/ Interchangeable magwellsAccepts M&P and Glock Mags Flat-Faces Trigger M-LOK Handguard • Action: Semi-Auto • Capacity: 23 + 1 • Finish: Black • Sights: No Sights • Barrel length: 16.5" • Overall length: 32.13" - 35.38" • 15in Free-Float MLOK Rail/ Ambi Bolt Release