Carlson?s Winchester 20ga Flush Improved Cylinder Replacement Choke Tubes are made of 17-4 heat treated stainless steel. steel or lead shot may be used in these choke tubes. steel shot larger than bb should not be used in any choke tighter than full. lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 20ga Winchester/Browning Invector/Mossberg 500 choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Sh

Carlson?s Winchester 20ga Flush Modified Replacement Choke Tubes are made of 17-4 heat treated stainless steel. steel or lead shot may be used in these choke tubes. steel shot larger than bb should not be used in any choke tighter than full. lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 20ga Winchester/Browning Invector/Mossberg 500 choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Shot, or Bi

Carlson?s Winchester 20ga Flush Replacement Full Choke Tubes are made of 17-4 heat treated stainless steel. steel or lead shot may be used in these choke tubes. steel shot larger than bb should not be used in any choke tighter than full. lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 20ga Winchester/Browning Invector/Mossberg 500 choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Shot, or Bismut

Carlson?s Winchester 20ga Flush Replacement Extra Full Choke Tubes are made of 17-4 heat treated stainless steel. steel or lead shot may be used in these choke tubes. steel shot larger than bb should not be used in any choke tighter than full. lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 20ga Winchester/Browning Invector/Mossberg 500 choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Shot, or

Carlson?s Winchester 20ga Flush Improved Modified Replacement Choke Tubes are made of 17-4 heat treated stainless steel. steel or lead shot may be used in these choke tubes. steel shot larger than bb should not be used in any choke tighter than full. lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 20ga Winchester/Browning Invector/Mossberg 500 choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Sh

Carlson?s Winchester 20ga Flush Cylinder Replacement Choke Tubes are made of 17-4 heat treated stainless steel. steel or lead shot may be used in these choke tubes. steel shot larger than bb should not be used in any choke tighter than full. lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 20ga Winchester/Browning Invector/Mossberg 500 choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Shot, or Bi

Carlson?s Remington 20ga Flush Skeet Choke Tubes are made of 17-4 heat treated stainless steel. steel or lead shot may be used in these choke tubes. Steel shot larger than bb should not be used in any choke tighter than full. Lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 20ga Remington (Rem Choke) choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Shot, or Bismuth ammo|Lifetime Warranty||||F|N/

Carlson?s Winchester 12ga Flush Light Modified Choke Tubes are made of 17-4 heat treated stainless steel. Steel or lead shot may be used in these choke tubes. Steel shot larger than bb should not be used in any choke tighter than full. Lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 12ga Winchester/Browning Invector/Mossberg 500 choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Shot, or Bismuth

Carlson?s Winchester 12ga Flush Skeet Choke Tubes are made of 17-4 heat treated stainless steel. Steel or lead shot may be used in these choke tubes. Steel shot larger than bb should not be used in any choke tighter than full. Lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 12ga Winchester/Browning Invector/Mossberg 500 choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Shot, or Bismuth ammo|Life

Carlson?s Winchester 12ga Flush Improved Cylinder Choke Tubes are made of 17-4 heat treated stainless steel. Steel or lead shot may be used in these choke tubes. Steel shot larger than bb should not be used in any choke tighter than full. Lead, copper-plated, nickel, hevi-shot, or bismuth may be used in these choke tubes.|.5|4|1|8|Fits 12ga Winchester/Browning Invector/Mossberg 500 choke systems|Manufactured from 17-4 Heat Treated Stainless Steel|Can be used with Steel, Lead, Hevi-Shot, or Bismu