CGS HELIOS QD 5.56 SILENCER CGS-HELIOS556-QD Manufacturer Model Number: CGS-HELIOS556-QD Manufacturer: CGS Group Model: Helios Caliber: 223 Rem | 5.56 NATO Type: NFA - Silencer Item Type: NFA Finish: Anodized Black Overall Length: 6.5" Weight: 19 oz. Shipping Weight: 4.95 Feature: 1/2x28 and 5/8x24 Rear Caps Feature: 1.375x24 Adapter Ring Optic Adjustable Objective: false Optic Reticle Illuminated: false