The RDB Defender is the result of taking the RDB and the RDB Survival and mashing them up to forge the perfect 5.56 light-duty tactical bullpup. It's lightweight comes standard with an aluminum M-LOK handguard collapsable stock and 16" pencil profile barrel. Defend your property your community and your homeland with the most tactically versatile bullpup on the market with the RDB Defender. Specifications: CALIBER: .223Rem WEIGHT UNLOADED: 6.7lbs MAGAZINE CAPACITY: 20 or any AR15 Magazine OVERALL LENGTH: 27" BARREL LENGTH: 16.1" TWIST RATE: 1:7in TRIGGER PULL: 4.5 - 5.5lbs