The Airsoft Sniper Rifle is a great sniper rifle acting as your primary or secondary weapon. The compact, heavy realism, quiet shot, high power, long barrel and range justifies its light-on-the-wallet price tag. The MB01 is also scope ready for the serious shooters. It takes most of the Marui after-market parts. Recommended BB: 6mm 0.2g / 0.25g, High Quality Airsoft BB only. Please regularly clean and lube your barrel to maintain accuracy. If you experience jam, please clean, lube, turn off your hop up unit, and try different brand BBs.