The Sling model includes a high quality QD single point bungee sling QD end plate receiver and padded buffer tube. - BILLET Receivers 1 Shorter than standard AR15 - AR15 Configured LAST ROUND BOLT HOLD OPEN - 31 rd. ETS Glock Style Magazine - Oversized Recurve Charging Handle - Fluted Muzle Enhancer - 4 Barrel Nitride 4150 Chromoly Steel 1:10 Twist - 3.5 Freedom M-LOK Free Float Handguard - Anodized Type lll Aluminum Components - Caliber 9mm (9x19) NATO - AR15 Configured Safety Selector - AR15 Configured Magazine Release - Steel Components Full Hard Nitride - Compatible with 9mm Approved (1/2x28 t.p.i.) Muzzle Devices and Suppressors - Action: Blowback - Accepts most AR15 Accessories - Limited Lifetime Warranty - Length 18.5 - Weight 4.45 lbs.