Gun Sales | Miller Guns and Ammo | Las Cruces Gun Store Miller Guns and Ammo is your locally owned full service gun store. We provide responsible gun owners with firearms, ammunition, knives, and accessories. Looking for your child’s first hunting rifle o Miller Guns and Ammo is your locally owned full service gun store. We provide responsible gun owners with firearms, ammunition, knives, and accessories. Looking for your child’s first hunting rifle or the rare and hard-to-find limited runs? Come in and see us, we will help you find what you need!