The 50 BMG Slip-Top Box was designed at the request of the growing number of 50 BMG users who said they only needed 10 rounds and preferred a slip top design. MTM Case-Gard added bullet tip protection for most bullets seated at standard lengths, by holding the rounds at the shoulder. This ammo box is suitable for 50 BMG, 50 DTC, 460 Steyr, HS 460, 416 Barrett.