RIS III 13" FSP ASSEMBLY BLACK 01-004-02383-006 Manufacturer Model Number: 01-004-02383-006 Manufacturer: Daniel Defense Model: RIS III M-LOK Rail Type: Accessory-Rails Item Type: Accessory Finish: Black Overall Length: 13" Weight: 16.38 oz Shipping Weight: 1.4 Feature: Free Floating Barrel Design Feature: Sling Swivel Attachment Points Feature: Continuous 1913 Upper Rail Optic Adjustable Objective: false Optic Reticle Illuminated: false