Durable and Impact Resistant Glass Fiber Reinforced Matte Black Polymer Construction Four-way Anti-tilt High Visibility Blue Follower and High Longevity Stainless Steel Spring for Reliable Feeding Features Positive Grip Texturing, Left and Right Side Windowed Main Body with Remaining Round Count Indicators, Over-insertion Stop, and Removable Flared Floor Plate Not Compatible with AR-10B, SCAR 17S, LAR8, HK417, or Rifles that Use M14, FAL, or HK G3/91 Patterned Magazines NOTE: This product cannot be shipped to: California, Colorado, Connecticut, District of Columbia, Hawaii, Massachusetts, Maryland, New Jersey, New York, and Vermont. Product Specifications Manufacturer UTG Model AR308 Caliber .308 Capacity 25 Rounds Warranty Lifetime Patent US PAT. D849178 Materials Polymer/Steel Color Black Compatible with AR-308 Quick-detachable No Magazine Body Type Windowed Follower Color Blue Weight 6.7 Height (in) 7.9 Length 3.1 Length (mm) 78.2