These flush mount choke tubes are for Browning Invector Plus (BIP) shotguns and are made from 17-4 heat treated stainless steel. Steel Lead and Hevi-Shot may be used in all constrictions with the exceptions listed below. These choke tubes are backed by Carlson's Lifetime Warranty and are made in the USA!

• No Steel shot larger than BB or speeds exceeding 1550 fps should be used in choke tubes tighter than Full
• Steel shot should not be used in the turkey constrictions