The MK12 was born in the late 1990s and fielded in the early 2000s, the MK12 SPR squeezed sniper accuracy from a 5.56 AR platform by pairing match grade barrels and the 77 grain Mk 262 round with free floating rails, precision triggers, and quality optics, letting shooters reliably reach targets 600 to 800 meters away while staying light and fast for close work. Its strength was delivering bolt action rifle accuracy with semi automatic follow up shots, using standard AR logistics, and proving itself in combat, which inspired many MK12 style builds and changed how forces think about mid range precision.
