Sure Cycle Benelli +3 Magazine Extension Tube 12ga 7 Shot SBE -BNL-EXT-3 3 Shot Magazine Extension Tube For Benelli Shotguns Black. Featuring a 316L Stainless Steel Tube, a low drag red anodized follower, stainless steel spring and steel barrel clamp with sling swivel, The Sure Cycle magazine tube extensions are the premier extension for your shotgun. Utilizing a ratchet alloy collar, the Sure Cycle system allows for a very quick change by adding round capacity to the existing magazine tube. This allows the user to convert from normal capacity to higher capacity without alteration of the firearm or OEM tube. Great for waterfowlers chasing snow geese, 3 gunners and home defense applications. The stainless one-piece construction of the tube is coated in Black Cerakote making it virtually impervious to any rust or corrosion caused by some of the worst weather conditions. Fits: Benelli Super Black Eagle, Super Black Eagle II, Super Black Eagle 3, Benelli M1 Super 90, Benelli M1 and M2 BR Features: Magazine Tube Constructed of 316L Stainless Steel Cerakote Black Finish Stainless Steel Magazine Spring 6061 T6 Aluminum Low Drag Follower, Red Anodized for Visibility Steel Barrel Clamp with Sling Swivel, Black Cerakote Ratchet Base Collar for Tight Fit 3 Shot Additional Magazine Capacity Overall Length: 9"BR Manufactured in the USA.