Tokyo Marui M4A1 AEG High Mount Base (25mm 30mm) Inner Barrel Category_GBB Rifle Item Weight (gram) 820 Major Item Weight (gram) 820 Major Color Desert Tan Length 202mm Barrel Length 109mm Blow Back Yes Hop up Adjustable Shooting Mode Semi Automatic Magazine Capacity 28+1 Bullet Type 6mm BB Pistol Power Source HFC134a Gas Power (Muzzle Velocity) 275 FPS (Top Gas Test @ 25°C Room Temperature) 230 FPS (HFC134a Test @ 25°C Room Temperature) Manufacturer Tokyo Marui TM Package Includes Tokyo Marui Desert Warrior 4 IMPORTANT NOTES: Manufacturer Tokyo Marui TM Item Weight (gram) 135 Major Color Black Ring Type QD Integral Scope Mount Elevation Level 23 30mm Inner Diameter 30mm 25mm "See Through" Design allow sneak through the Iron Sight