MDT's Metal magazines are designed with a unique Double Stack to Single Feed (DSSF) transition design for reduced overall height compared to the industry standard. Each unit is manufactured from high strength steel, nitrided, and finished inside and outside with Cerakote Elite for ultimate durability, corrosion resistance, and friction reduction. Specifications: Compatible Calibers: 6.5 PRC, 270 WSM, 7 RSAUM, 300 WSM2.955" COALCapacity: 3 rounds MDT 3-Pack SA .300 WSM/6.5 PRC 3rd Blk Metal Magazine Bundle 103133-BLK-MDT-KIT-3X