upper reciver

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    KAC SR-25 PC vs WC-10 Recon Tactical, 16" .308

    Hello, does anyone know the technical differences from Knight's 16" PC .308 to Wilson's 16" recon tactical. I am trying to decide on a complete upper for my next "AR". Knight's lists their barrel as Mid-weight Contour, 5R Cut. They do not mention what their Mid-weight material actually is...