Franklin Armory OPS-16 5.56 NATO 16in Piston Complete Upper Reciever Black. 56 NATO 16in Piston Complete Upper Reciever was created to function as the ideal product for anyone looking for an exceptional selection.. Developed working with several of the most extremely durable and long lasting materials around these AR15 Upper Receivers by Franklin Armory will present you with an item which will give you years of dependability. Franklin Armory has been making top quality merchandise for a number of years and the Franklin Armory OPS-16 5.56 NATO 16in Piston Complete Upper Reciever is their manner of revealing exactly how much they care. Here at OpticsPlanet we make it our responsibility to get the most suitable solution for your needs and showcasing the Franklin Armory OPS-16 5.56 NATO 16in Piston Complete Upper Reciever is a thing that we are pleased to offer. Specifications for Franklin Armory OPS-16 5.56 NATO 16in Piston Complete Upper Reciever: Manufacturer: Franklin Armory Caliber: 5.56x45mm NATO Barrel Length: 16 in Color: Black Gas System Type: Piston Magazine Included: No Package Contents: Franklin Armory OPS-16 5.56 NATO 16in Piston Complete Upper Reciever Franklin Armory 00-40078-BLK: OPS-16 5.56 NATO 16in Piston Complete Upper Reciever Black