Carlsons 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.
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 Bismuth ammo
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