The SB Tactical SBA3 pistol stabilizing brace is an adjustable pistol stabilizing brace capable of accepting a MIL-SPEC carbine receiver extension/buffer tube (not included). The SBA3 is a 5-position adjustable brace which dramatically enhances versatility while sporting a slick minimalist design. Additionally, this unit features an ambidextrous QD sling socket allowing you an easy to reach sling attachment point. This brace is ATF Compliant, designed by US Veterans and is proudly made in the USA.