The B5 Systems Bravo Stock is streamlined for users who want optimal performance without unnecessary bells and whistles. The Bravo SOPMOD stock is the lightest" most effective design of its kind. The minimalist engineering and angled butt stock ensure quick and consistent placement. When you throw a gun to your shoulder" you want to reach that proper position the first time" every time. Made of Milspec materials and finishes and fits all Milspec AR15 receiver extensions.