Before revision: Expandable ASP expandable baton in expanded and collapsed state Swedish riot police with expandable baton An expandable baton (also referred to variously as a collapsible baton, telescopic baton, tactical baton, extendable baton ASP, a PEACEKEEPER ) is typically composed of a cylindrical outer shaft containing telescoping inner shafts (typically 2 or 3, depending on the design) that lock into each other when expanded.
After revision: Expandable ASP expandable baton in expanded and collapsed state Swedish riot police with expandable baton An expandable baton (also referred to variously as a collapsible baton, telescopic baton, tactical baton, spring cosh, ASP, or extendable ) is typically composed of a cylindrical outer shaft containing telescoping inner shafts (typically 2 or 3, depending on the design) that lock into each other when expanded.