M&P15 SBR 5.56 11.5" M-LOK 10" Manufacturer Model Number: 13623 Manufacturer: Smith and Wesson Model: M&P15 SBR Caliber: 223 Rem | 5.56 NATO Type: NFA - Short Barrel Rifle Item Type: NFA Firearm / Accessory Action: Semi-Auto Firearm / Accessory Capacity: 30 + 1 Finish: Black Anodized Sights: Adjustable Folding Sights Stock Frame Grips: Collapsible / Folding Stock B5 Systems Magazine Quantity and Description: 1 30 rd. Magpul PMAG Overall Length: 27.8" - 31.1" Weight: 6.5 lbs. Shipping Weight: 1.0 Feature: 10.5" M-LOK FF Handguard Feature: Raptor-LT Ambi Charging Handle Feature: Flat Face Trigger Optic Adjustable Objective: false Optic Reticle Illuminated: false