As its name suggests, the Fade Adapt pack keeps you flexible under pressure and encourages customization in your loadout. A hidden, expandable scabbard allows you to increase storage size immediately.With the scabbard collapsed, it's designed to fit a 10.5" AR-15 with a Law Tactical folding stock adapter (21" tall with a standard A2 muzzle device; longer muzzle devices may not fit). Expand the scabbard, and now you have a pack capable of carrying weapons up to 27" tall.