One 8" barrel takedown AR pistol and up to 438 rounds of 5.56 ammo in 14 mags. AR pistol has Cry Havoc takedown and a Law Tactical folding hinge for buffer tube. Stay away from the Dolos takedown device, it sucks. Muzzle device is not an A2 as depicted in the photos below, I'm using a muzzle device which is far better at directing the concussion forward, as a barrel this short is extremely loud. I also found room for my electronic hearing protection.