Abstract: A bull barrel assembly for an airgun includes a metal barrel received in a composite barrel sleeve. Two tensioners are threaded on the respective opposite threaded ends of the barrel against the respective opposite ends of the sleeve such that the sleeve is compressed and the barrel is tensioned. The compressed sleeve is rigidly secured to the tensioned barrel by an adhesive. The barrel assembly is formed by coating a surface of a metal barrel with an adhesive, assembling the adhesive-coated barrel into a composite barrel sleeve before the adhesive sets, tightening the tensioners onto the respective opposite threaded ends of the barrel and against the respective ends of the sleeve to place the barrel in tension and the sleeve in compression before the adhesive sets, and allowing the adhesive to cure while the sleeve is in compression and the barrel is in tension.

Abstract: An arrow stabilizer for an archery airgun includes an elongated body configured to be secured to the airgun. The body defines a non-cylindrical passage extending longitudinally therethrough. The passage is configured to receive an arrow and support a shaft of the arrow as the arrow travels through the passage when launched by the airgun. The passage can have a non-circular cross-sectional profile that includes a central bore configured to closely receive the arrow shaft, and a plurality of radially extending slots configured to receive the fletching. The slots and central bore cooperate to form stabilizing rails upon which the arrow can ride through the passage. The rails guide the arrow shaft smoothly along the passage and hold the arrow substantially stable as it travels therethrough when launched by the archery airgun.