This refers to a muzzle constriction device designed for Thompson/Center Contender pistols and rifles chambered in the versatile .45 Colt/.410 bore combination. It allows shooters to improve shot patterns when firing .410 shotshells through these firearms. These devices attach to the muzzle and influence the spread of the shot, making them more effective for hunting small game or for recreational shooting.
The ability to control shot pattern is crucial for ethical and effective hunting with .410 shotshells. A tighter pattern delivers more pellets to the target, increasing lethality on small game and minimizing lost or wounded animals. Historically, the .45 Colt/.410 combination in the Contender platform gained popularity due to its adaptability; this accessory further enhances this flexibility. Being able to use a single firearm for both handgun and shotgun applications offers significant advantages in terms of cost, portability, and convenience.