5-Position Adjustable Integral, Ambidextrous QD Sling Socket Arm Cuff Size Based On The Original SB15? Comes With Adjustable Nylon Strap For A Custom Fit The SBA5 Pistol Stabilizing Brace Is 5-Position Adjustable And Designed For All Platforms Capable Of Accepting A Mil-Spec Carbine Receiver Extension. Featuring An Integral, Ambidextrous QD Sling Socket And An Arm Cuff Based On The Original SB15, The SBA5 Greatly Enhances The Usability Of The Host Firearm By Providing An Additional Point Of Contact.