Century Arms RI4330N: Optic Ready Side Mount - Premium Maple Hardwood Furniture - Forged and Bulged 4140 Steel Front Trunnion - RAK-1 Enhanced Trigger - AK74 Style Muzzle Brake - Bolt Hold Open and Extended Tab Safety Selector - Caliber 5.45 x 39MM - Receiver Bulged and Forged Trunnion w/ 1.5mm Stamped Steel - Grip US Palm - Trunnion Forged and Bulged 4140 Steel Front Trunnion - Receiver Finish Manganese Phosphate Finish per Mil-DTL-16232 - Barrel 4150 Chromoly steel 14x1 Left Hand Thread - Magazine Capacity 30 RDS - Sight Configuration Adjustable Front and Adjustable Rear Optics Ready Side Mount - Trigger SET-UP RAK-1 Enhanced Trigger - Overall Length 37 - Overall Height 7.5 - Overall Width 1.375 - Barrel Length 16.25 - Barrel Twist 1:7 - Unloaded Weight 6.8 LBS 3.08 KG