The Sig Sauer MPX-K SPORTLINE AEG ProForce 6mm Battery Automatic Electric Airsoft Rifle AIR-PF-MPXSLAEG is a high-performance airsoft rifle designed for competitive play and realistic training. This automatic electric gun features a durable polymer construction with a full metal gearbox, providing reliable performance and durability. The rifle includes a 100-round magazine and is optimized for use with a rechargeable battery, offering consistent power and rapid firing capabilities. The adjustable hop-up system and precision inner barrel ensure accurate and consistent performance, making this airsoft rifle a top choice for serious players.