| Q. | 
                      What are some of the 
                      differences in Browning choke tubes? | 
                    
                    
                      | A. | 
                      The Invector, or ""Standard Invector" system" was 
                      introduced in 1983. A few years later, the Invector-Plus 
                      chokes were introduced to fit the new back-bored shotgun 
                      barrels. These two choke systems will not interchange. If 
                      you have screw-in chokes in your shotgun barrel, the kind 
                      of system you have will be stamped on the barrel near the 
                      receiver. You must use the proper choke system for your 
                      shotgun.  
                       
                      Midas Grade Extended Tubes. These longer tubes are 
                      designed for clay targets. Easy removal and installation 
                      with fingertips. High resolution "RMS" finish reduce 
                      plastics buildup. For use in Invector-Plus 12 and 20 ga. 
                      Available for Remington and Beretta/Benelli shotguns. 
                       
                      Duck Commander Extended Tubes. These tubes have a 
                      camouflage finish and directional porting which reduces 
                      recoil for fast, accurate follow-up shots.  
                       
                      Sabot Express Rifled Choke Tube. Extremely 
                      effective with both sabot and Foster slugs and 00 buckshot 
                      and larger. This tube out performed a rifled barrel in 
                      Browning tests. Threaded for Invector-Plus back-bored 12 
                      ga. shotguns.  |