Precision Machined with Maximum Strength Well Designed Handguard Tri-rails with Extended Length (9" Long) to Cover the Entire Gas Tube to the Rear Sight Area Three Mil-spec Picatinny Rails with Plenty of Slots, 21 Slots on Each Side and 22 Slots on Top for Versatile Accessory Applications Top Rail Center V-cut Allows Iron Sight Use Clever Rail System Locking Design Includes Lower Bottom Base Mating with Top Piece for Most Solid and Secure Fit Simple and Friendly Installation, no Gunsmith or Tool Required - Do Not Need to Remove Original Handguard Great Zero-retention Capability for all Accessories Installed on the Rails Intensively Tested by Field Experts Under Extreme Heat and Sub-zero Temperature and Demonstrates Most Satisfactory Performance Ultimate Tactical Solution to Enhance Accuracy Under Toughest Environments Universal Design Fits Model SKS and Variants with Standard/Oversized Barrel and Gas Tube Hard Anodized Finish for Wear Resistance UTG Rubber Rail Guards Included for Great Comfort and Protection