Holosun HS515GM Noir/Rouge The HS515GM is an ultra durable 20mm micro sight designed for hard-use rifle and carbine applications. The HS515GM is made from 7075 aluminum and includes clear, removable/rotating lens caps, a QD lower 1/3 co-witness (1.63”) mount, and is IP68 certified waterproof and dustproof rating. Additional features include...