This choke tube fits all guns that accept the Rem-Choke thread pattern, including Remington and Charles Daly. In 2005 Clark Bush set the 20 gauge World Record by scoring 32 pellets in 3" at 40 yards. In 2006 Doris Bush set a 20 gauge Women's World Record by scoring 30 pellets in 3" at 40 yards. In 2007 Doris Bush won the World Championship in the Women's Class with a Swarm© 20 Gauge Turkey Choke.
The Swarm© choke tube is rated for all shot types, (no steel) including Hevi-Shot and all tungsten-based shotshells.