Overview Reviews Product Description Holds magazine either horizontally or vertically.Accommodates double stacks, 9MM or .40 caliberTop grain leather Product Videos Custom Field Product Reviews Write a Review Write a Review × Boston Leather Double Mag Holder For 9mm/40Cal. Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *