The Sons of Liberty Gun Works M4-89 .300 AAC Blackout Half Complete Upper Receiver was created in order to function as the ideally suited item for anyone needing a top quality option.. These AR15 Upper Receivers from the skilled product specialists at Sons of Liberty Gun Works are made by using long lasting and reliable resources, to be able to supply you with a product which will be powerful for countless years. Designed using some of the best attainable substances and design, these particular AR15 Upper Receivers from the product experts at Sons of Liberty Gun Works can last an unbelievably lengthy time. Sons of Liberty Gun Works has been developing high quality merchandise for a number of years, and the Sons of Liberty Gun Works M4-89 .300 AAC Blackout Half Complete Upper Receiver is their particular approach to showing you just how much they care. Here at OpticsPlanet, we make it our obligation to receive the best product for all your specifications, and featuring the Sons of Liberty Gun Works M4-89 .300 AAC Blackout Half Complete Upper Receiver is something that we are pleased to offer. Specifications for Sons of Liberty Gun Works M4-89 .300 AAC Blackout Half Complete Upper Receiver: Manufacturer: Sons of Liberty Gun Works Caliber: .300 AAC Blackout Overall Length: 13.9 in Barrel Length: 13 in Color: Black Handguard Length: 13 in Gun Make: AR Platform Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Package Contents: Sons of Liberty Gun Works M4-89 .300 AAC Blackout Half Complete Upper Receiver