Shop › MIDWEST MB TWO CHAMBER M14X1.0LH .30 MIDWEST MB TWO CHAMBER M14X1.0LH .30 $44.95 Midwest Industries AK .30 Cal Two Chamber Muzzle Brake, Black Phosphate Finish, M14 x 1.0 LH, .30 Caliber, For AK MI-MB6 Quantity: Add To Cart Added! Midwest Industries AK .30 Cal Two Chamber Muzzle Brake, Black Phosphate Finish, M14 x 1.0 LH, .30 Caliber, For AK MI-MB6