The UTG Pro Ops Ready S5 Fixed Stock is Molded from Impact Resistant High Strength Matte Black Polymer. Compatible with Rifle-length Receiver Extension Tube the Pro Ops Ready S5 Does Not Require an A2 Buttstock Spacer. Built for Heavy Duty Use with the Tightest Tolerance Controls to Provide the Most Secure Fit and Function. It features an 11" Overall Length with Ergonomic Slanted Cheek Rest and Steel Reinforced Rubberized Butt Pad. Integral Picatinny Rail Attaches Included 0.23" Cheek Riser and Other Accessories. Reversible Quick Detach Sling Swivel Housing for Left or Right Handed Shooters and Standard Sling Swivel Stud for Traditional Slings.