The Dogtra Remote Releases are designed for Dogtra PL and QL bird launchers as well as being compatible with most after-market bird/bumper launcher systems. The Dogtra RR Deluxe features the most advanced technology to help sharpen your dog's skills for upland hunting, retriever work, or for competitions. Dogtra launchers are aptly designed for a wide variety of birds including pheasants, quails and barn pigeons.