Designed for all platforms capable of accepting all carbine receiver extension, the SBR Stabilizer, dramatically enhances versatility, and features a minimalist design with an integral, ambidextrous QD sling socket. -Minimalist design -Does not include but fits all receiver extension buffer tube including Mil-Spec or 1.25" diameter Pistol Buffer Tube -ATF compliant Rather than color in Black, I also have color in FDE in picture 3 with the same price.