Design: Minimalist Design Adjustability: 5-Position Adjustable Features: Integral, ambidextrous QD sling socket US Veteran Designed And Proudly Made In The USA Note: Buffer Tube Not Included Designed For All Platforms Capable Of Accepting A Mil-Spec Carbine Receiver Extension, The SBA3 Is 5-Position Adjustable, Dramatically Enhances Versatility, And Features A Minimalist Design With An Integral, Ambidextrous QD Sling Socket.