MDT 103133-BLK: These magazines are designed with a unique Double Stack to Single Feed (DSSF) transition design for reduced overall height compared to the industry standard. MDT AICS-pattern metal magazines are manufactured from high strength steel, nitrided, and finished inside and outside with Cerakote Elite for ultimate durability, corrosion resistance, and friction reduction. COMPATIBILITY: 6.5 PRC, 270 WSM, 7 RSAUM, 300 WSM. The magazines without front binder plates allow a maximum cartridge overall length of 2.960. These are compatible with all AICS-pattern bottom metal and chassis systems, but most common actions such as Remington 700 and Savage 10/11 will require modifications to the receiver (i.e. notching out the bottom of the feed ramp) to prevent the bullet tips from catching on the bottom of the feed ramp (see photo below).