Federal T556TNB1 5.56 62 Gr MK318 MOD-0 SOST

Federal MK318 MOD-0 SOST 5.56x45mm NATO ammunition delivers professional-grade performance with a proven barrier-defeating design. Originally developed for the U.S. Marine Corps, this 62-grain open tip match round features a reverse-copper jacket and optimized ballistic characteristics that excel at penetrating barriers—glass, vehicle doors, and other obstacles where standard rounds fall short. The specialized construction provides superior accuracy and terminal performance, making it ideal for shooters who demand reliability and lethality in demanding conditions.

Each box contains 20 rounds of Lake City-manufactured ammunition, backed by Federal's reputation for quality and consistency. Whether you're stocking duty rounds or seeking proven barrier-penetration performance, the MK318 MOD-0 SOST represents precision engineering purpose-built for serious applications.