Description:Enhanced Design: Equipped with a durable nylon stock and adjustable front and rear sights for improved versatility, user comfort, and overall handling performance. Split frame structure:The separate frame design supports quick disassembly and easy maintenance, offering structural stability and ease of upkeep. Version 2.5 :Bolt-Action Pre-Feeding SystemThe Version 2.5 supports a bolt-action pre-feeding function. By pulling the charging handle, the gel balls can be pre-fed before firing, which improves shooting response speed and enhances the overall user experience. Metal components: Metal inner tube, metal gears, metal charging handle, metal ejection port cover, metal magazine release button, metal buffer ring, metal firing control button, metal iron sights, metal buffer tube. Version 3.0 :Simplified Internal StructureThe Version 3.0 does not support bolt-action pre-feeding, but features a simplified internal structure that makes maintenance easier and improves long-term reliability. Split-Type Metal GearboxEquipped with a durable split-type metal gearbox, providing stronger structural stability and easier internal servicing. Metal components: Metal gearbox, metal inner tube, metal gears, metal charging handle, metal ejection port cover, metal magazine release button, metal buffer ring, metal firing control button, metal iron sights, metal buffer tube, metal magazine. Features:1. Bottom-feed magazine, detachable accessories, empty attachment2. Firing modes: Semi-automatic / Fully automatic3. Range: 20-25 meters4. Material: Nylon+Metal5. Firepower: 240 FPS6. Ammunition type: 7-8mm gel balls7. Battery interface type: Tamiya connector8. Dimensions: 59*25cm Packing List:2.5 Configuration:1*HK416C toy gun1*Magazine1*Goggles2*Iron Sights1*11.1V Rechargeable Battery1*USB Charging Cable1*Gel Balls (10,000 units) 3.0 Configuration:1*HK416C toy gun1*Metal Magazine1*Goggles2*Iron Sights1*Grip1*11.1V Rechargeable Battery1*USB Charging Cable1*Gel Balls (10,000 units)