MCX SBR 556 FDE 11.5" 30+1 RMCX-556N-11B-IR-SBR Manufacturer Model Number: RMCX-556N-11B-IR-SBR Manufacturer: SIG SAUER Model: MCX 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: Flat Dark Earth Stock Frame Grips: Collapsible / Folding Stock Flat Dark Earth Magazine Quantity and Description: 1 30 rd. Shipping Weight: 0.0 Feature: Aluminum MLOK Handguard Optic Adjustable Objective: false Optic Reticle Illuminated: false