The MK10EO gun is a compact and lightweight rifle developed by Barrett Firearms Company. It features a semi-automatic action and a magazine capacity of 10 rounds. The gun is known for its accuracy and reliability, making it a popular choice among military and law enforcement agencies. Its ergonomic design and adjustable stock make it comfortable for the shooter to handle in various shooting positions. Overall, the MK10EO is a versatile and effective firearm for a variety of tactical applications.