Model: F12 Bronze Classic - Gauge: 12 Gauge - System: Gas Operated Semi Automatic - Chamber: 3 - Ammunition: 2 3/4 and 3 - Receiver Material: T6 7075 Hardened Aluminum (Upper & Lower) - Forend Material: T7 Series Aluminium - Color: Bronze Cerakote - Barrel: 4140 Full Steel Smooth Chrome Lined 18.5" Heat Shield: Over Barrel - Sights: Polymer Flip Up Sights - Mag Release: Large Textured Button Ejects Magazine - Safety: Ambidextrous Safety Switch - Bolt Release: Large Enhanced Lever - Gas Block: Adjustable for Heavy and Light Loads - Weight: 7.9 LBS - Overall Length: 38"