This is a UTG PRO AR-15 Ops Ready S4 Mil-spec Stock Kit molded from impact resistant high strength matte black polymer. It is complete with Mil-spec extension tube" buffer" buffer spring" receiver end plate" and castle nut. Its unique 4.28" length with 4 position adjustability provides comfortable length of pull and ease of shouldering firearm when wearing a load bearing vest or plate carrier system. It is built for heavy duty use with the tightest tolerance controls to provide the most secure fit and function. Flat dark earth finish.

UTG PRO USA Made
• Stock Molded from Impact Resistant High Strength FDE Polymer
• Minimal Bulk Profile, Lightweight, Beyond Sub Compact Size, Ideal for SBRs
• Unique 4.28" Length with 4 Position Adjustability Provides Comfortable Length of Pull and Ease of Shouldering Firearm when Wearing a Load Bearing Vest or Plate Carrier System
• Combine with Our Super Slim Handguards for a Superior Firearm Handling Experience
• Built for Heavy Duty Use with the Tightest Tolerance Controls to Provide the Most Secure Fit and Function
• Includes Ergonomic Slanted Cheek Rest and Rubberized Butt Pad and Features a Reversible Sling Swivel Housing for Left or Right Handed Shooters and a Standard Sling Loop for Traditional Slings
• Complete with Mil-spec Extension Tube, Buffer, Buffer Spring, Receiver End Plate, and Castle Nut
• Removable 5.51" Extended Cheek Rest Insert Included
• Low Profile and Lightweight Design Does Not Add Excessive Bulk