Description Like no ordinary bullpup, the RDB series of rifles redefines the platform. Youâve never experienced balance or a trigger quite like this in any other design. The RDB is completely ambidextrous due to its patented downward-ejection, magazine catch/release placement, intuitive safety and reversible operating handle. The RDB series of bullpups delivers a 5.56/.223 ballistic advantage in a very compact package thatâs easy to manipulate for just about anyone.PRODUCT DETAILCALIBER: .223Rem/5.56x45mm WEIGHT UNLOADED: 7lbs/3.2kg MAGAZINE CAPACITY: 20 or any AR15 Magazine OVERALL LENGTH: 27.3?/693mm BARREL LENGTH: 17.3?/439mm TWIST RATE: 1:7?/1:178mm TRIGGER PULL: 4.5-5.5lbs/20-25N Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.