MTM Slip-top Ammo Box for 50 BMG and .416 Barrett Holds 10 Rounds Black. 416 Barrett Holds 10 Rounds Black BMG10-40 on sale and available from our online store. OpticsPlanet is an Authorized US Distributor for MTM Reloading Equipment. Slip-top ammo box designed for .50 BMG and .416 Barrett ammo. Holds 10 shells. Specifications for MTM Slip-top Ammo Box for 50 BMG and .416 Barrett Holds 10 Rounds Black BMG10-40: Manufacturer: MTM Additional Features: Ammo Box Number of Rounds: 10 Color: Black Caliber: .416 Barrett Fabric/Material: Polypropylene Finish: Black Package Contents: MTM Slip-top Ammo Box for 50 BMG and .416 Barrett Holds 10 Rounds Black BMG10-40 We offer the complete line of MTM Reloading Equipment. For our complete selection of products by MTM on sale please visit our MTM page. For more Reloading Equipment please visit our Reloading Equipment store section. MTM Slip-top Ammo Box for 50 BMG and .416 Barrett Holds 10 Rounds Black