This is my earliest model, Tony told me this one was made before the company moved to Centerville. The barrel has six grooves and a 1 in 32 inch twist.
This SS model with the thumbhole stock has a Wiseman barrel with six grooves and a 1 in 28 inch twist.
These are my two mk 85's with the 20 inch carbine barrels. The blued one was called a Knight Light mk 85. It originally came with a synthetic stock but I got this laminate stock for it. It has eight grooves and a 1 in 32 twist.
The SS carbine I believe is the only one of these with a green mountain barrel. It has eight grooves and a 1 in 28 inch twist.