Toy Kit Blasters present the Army Armament R504 STI 2011 Costa Ludus GBB that they have available in the Philippines. The R504 airsoft pistol boasts a full-metal build, green gas power, and realistic features like blowback and fiber sights. This replica packs a punch with its 28-round magazine and adjustable hop-up, while upgrades like ambidextrous controls and Picatinny rails enhance user experience and customization options.