The First Strike T15 PDW Stock is a great addition to your FS T15, allowing for a shorter overall marker length. Our collapsible stock was designed with the professional realism in mind, allowing for quick stock deployment into the firing position. The PDW Stock has 2 positions that can simply be pulled into the fully extended position without the need for manipulation and collapsed by depressing the locking mechanism. The FS T15 PDW Stock comes as a complete drop-in unit containing stock and rear air chamber.