On December 22, 2016 Sig Sauer announced a recall of their MCX rifle carriage assemblies. According to Sig Sauer, extensive factory testing has indicated in very rare circumstances the current MCX might be able to fire unintentionally. Sig Sauer has currently only noted the problem with the .300 BLK version of the MCX, but has offered an upgraded carriage assembly to fix all effected MCX rifles . This upgrade will be offered for both 5.56mm and .300 BLK MCX versions.
Sig Sauer is one of the most respected firearms manufacturers in the world, and their products have been widely praised for quality, innovation, and safety. Any manufacturer of mechanical devices will occasionally run across a problem unforeseen or experienced in production. Sig Sauer has jumped on their responsibility to fix this problem, and their robust recall efforts exhibit the signs of a great leader in the firearms community.