Armería JJ is a firearms retailer based in Montevideo, Uruguay, serving customers across the country since 1990. Its online shop offers products across several categories, including long guns, handguns, ammunition, sights and optics, less-lethal equipment, and accessories. The catalog features items from brands such as Armusa, Byrna, and Cazador, with examples including shotgun ammunition, CO2 cartridges, projectiles, holsters, and firearm-related optics. Customers can browse featured products and contact the store to ask about prices and availability or request a catalog.

Alongside its retail offerings, Armería JJ publishes practical tips and informational articles. Topics include the differences between MOA and MRAD reticles in telescopic sights and the benefits of cold-hammer-forged rifle barrels. The website provides online shopping and account features, as well as contact options by phone, WhatsApp, and email. Armería JJ’s physical address is Cuareim 1777, at the corner of Valparaíso, in Montevideo. Its combination of a broad shooting-sports catalog, customer contact channels, and educational content supports its established presence in Uruguay.