The Sig Sauer MCX Rifle 5.56 & 300 BLK – The NEW AGE of Rifles

This military rifle can be converted from 5.56x45mm to 300 Blackout in just seconds!

Continuing our reviewing of the Sig Sauer MCX, here is the latest video in our series, recorded at Shot Show 2017 with Adam Painchaud of Sig Sauer Academy.