The Vism Takedown Carbine Backpack's main compartment is 23"H x 13.5"W x 5.2"D with an internal 19"H x 6"W main pouch with flap for a takedown stock/receiver section and two 19"H x 2.5"W pouches with flaps for the barreled assemblies. The middle compartment is 23"H x 12.0"W x 2.25"D with MOLLE webbing for attaching MOLLE compatible gear inside the backpack and a large zippered mesh pocket for more gear. The bottom compartment 11.5"H x 10.25"W x 1.5"D with ultra-long magazine pouches (9"L) running the full width of the compartment with hook & loop flaps on both ends. This allows you to use sub-compact, double stack standard capacity magazines and even 30+ extended capacity magazines. The mag pouches can hold up to ten standard capacity double stack magazines. Adjustable padded shoulder straps and a sternum strap with quick connect buckles. Thick back padding and a large zippered 13"H x 12"W compartment. The top front zippered compartment 9.5"H x 7"W x 1.5"D with two internal pockets. Side mesh pockets 6.5"H x 5"W on each side of the backpack. Backpack dimensions: 23"H x 15"W x 12"D.Backpack has lockable metal zippers on top, middle and bottom compartments.