The Frankford Arsenal® Ammo Vault® takes ammo storage and transportation to a whole new level. By combining tough, impact-resistant materials and an innovative locking design the Ammo Vault® offers unsurpassed protection for your rifle cartridges. No more rattling, no more rubber bands, no more cracked and broken boxes. Give your ammunition the protection it deserves. RLG-20 fits belted mags, Lapua Mag, 45-70, etc.