Mossberg doesn't note either way on the 940 Pro tactical page. Best to confirm with them directly at mossberg.com/contact-us

Hi Tim, this uses the Accu-Choke System and comes with Cylinder Bore Choke Installed. No other chokes are included.
Stay safe & have a great day!

It uses the Mossberg's Accu-Choke system but only comes with one choke tube (cylinder choke) any Mossberg Accu-choke chokes will fit

Hi Tim and welcome. This model uses Accu-Chokes and comes with a cylinder Choke. Full Choke available here: -- budsgunshop.com/product_info.php/products_id/46300/mossberg+accu+choke+12ga+ful ---------------------------------- and Modified Choke here: budsgunshop.com/product_info.php/products_id/46301/mossberg+modified+12+gauge+accu-choke+tube ---------- Cheers and stay safe!

Yes, It's designed to be compatible with Mossberg's Accu-Choke system. The Mossberg 940 Pro Tactical SPX 12ga 18.5" Barrel 7+1 comes with a cylinder choke tube installed.