Just built this custom .223/5.56. Shoots very true and has been test fired. Put's them down range exactaly where you shoot them. - Caliber= .223/5.56 - Anderson Manufacturing Lower Receiver - Cool Gadsden Logo on the Receiver - Palmetto State Classic Lower Receiver - Mil Spec Upper - Red Dot easy adjustable sight - Adjustable but stock Will me you and do all the paper work with you for the transfer or can ship to your FFL Dealer. Please feel free to let me know if you have any questions!