I was surprised to see how simple the crank modification was http://twozprecision.com/product/gatcrank-15/ http://twozprecision.com/product/gatcrank-15/ Looks

I was surprised to see how simple the crank modification was http://twozprecision.com/product/gatcrank-15/ http://twozprecision.com/product/gatcrank-15/ Looks like a bump stock was used though https://apnews.com/e74a33083fb84b1b94c1ce3da986fd4f https://apnews.com/e74a33083fb84b1b94c1ce3da986fd4f