Howa ATIM10RCR Ammo Boost 6.5 Creedmoor Howa 1500 10rd Black Detachable | Magnum Ballistics
AmmoBoost Detachable Magazine Conversion Kits - Howa - YouTube
LPT: The ammo boxes (and explosive barrels) reset every time you enter a rune trial, whether you complete it or exit out of it. Quick way to master vacuum and ammo boost