DBT50-7.62-3P DBT50-7.62-2P DBT30S-7.62-6P DBT30S-7.62-5P DBT30S-7.62-4P DBT30S-7.62-3P DBT30S-7.62-2P DBT30R-9.5-6P DBT30R-9.5-5P DBT30R-9.5-4P