Quickly and easily upgrade your UDP-9 (or most any AR-15 firearm) by dropping in the ambidextrous Talon safety selector from Radian Weapons. The modular design can be installed as a standard 90deg or as a 45deg short throw by simply rotating the shaft 180deg inside the lower receiver. The Talon is super easy to install using a dovetail interface and spring-loaded retention stud - no screws to come loose or break! 2-Lever Combo: short & long for ease of manipulation Machined from hardened steel with a black nitride finish Compatible with UDP-9/UDP-45, AR15/M16 and AR10/SR25-pattern rifles Lifetime warranty and 100% manufactured in the USA