RECEIVER EXTENSTION (BUFFER TUBE) NOT INCLUDED. FEATURES Minimalist design 5-position adjustable Integral, ambidextrous QD sling socket US veteran designed and proudly made in the USA PRODUCT INCLUDES Brace Adjustable nylon strap SBA3™ SPECIFICATIONS FIT:All platforms capable of accepting a mil-spec carbine extension CAVITY DEPTH:6.0″ LENGTH:6.75″, 7.6″, 8.25″, 8.75″, 9.5″ STRAP WIDTH:1.0″ WEIGHT:6.75 oz COLOR:Black WIDTH [MAX]:1.8″