his model is a variation of the B model BAT actions, it has the same bolt and port length as a B action but the end of the action is longer and therefore gives you additional space to bond it with the stock. It has a integral sleeve that goes over .935″ of a barrel, and as a result giving you surface for bedding it on a rifle. The MB action is 8.500″ long, it has several exterior shape options, has a starting weight is 38.5 oz and can vary depending on features chosen. The load port length is 3.00″ and the barrel tenon is 1.062×18 tip and has a maximum barrel is 1.25″ and a maximum shoulder contact of 1.23″.
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