Manufacturer: Hevi-Shot 560121
Specifications and features:
Remington and Charles Daly 12 gauge extreme-range waterfowl choke tube
For shooting going-away or long-bird shots
Ported, knurled forend
Internal axial rings keep shot cloud on target
Aircraft stainless steel
Matte black finish
Porting drops gas pressure at the muzzle, helps ease the wad away from the shot, reduces recoil, and dampens muzzle jump.
Extreme range choke tubes are NOT recommended for steel pellets larger than BB or excessive speed of more than 1550 fps.