Ask the Community

Yes, this has a 3 inch chamber so it can safely handle both 2-3/4 inch and 3 inch shells. Looks like xbl stands for (extra Barrel). Buds is the only website that uses the xbl. Hope this helps.

Rick, yes, this barrel has a 3 inch Chamber and can fire 3 inch and the shorter 2 3/4 inch shells no worries. Same concept as a .357 Mag revolver being able to fire the shorter .38 Special cartridge. Extra Barrel (XBL) is a unique (Buds Listing). Mossberg's FLEX is a modular Stock configuration and has nothing to do with the barrel (https://www.mossberg.com/category/series/500/500-flex/). Cheers and stay safe!