From our total collections brochure to a center on brassware or our companies - all our brochures can be obtained for down load. Ask for A BROCHURE You might see the thirty round magazine. OOW offers a thirty spherical BAR mag and the ones we employed throughout the demo performed https://gunsandammunation.com/shop/ohio-ordnance-works-model-1918a3-bar-semi-automatic-rifle/