Ruger Magazine, 762NATO/308 Winchester, 20 Rounds, Stainless Steel Body, Fits Ruger SFAR and Precision Rifles, Gray, Manuactured by DuraMag 90448 This 20-round single feed magazine fits the SFAR" Ruger Precision Rifle and SR-762 chambered in .308 Win & 7.62. The 410 stainless steel body provides strength and durability while the POST & HOLE adds strength" durability and robotically-welded precision.