I am one of the lucky ones who own a 500BB in 16 gauge. The 12 gauge flex system fits it perfectly, only had to change out the magazine tube. Now have matching 12, 16, and 20; all in flex system. Looks real impressive. Have a 500 in 410 and would like to match it with the rest.
https://www.tombstonetactical.com/catalog/mossberg/500-tactical-shotgun-20-ga-18.5in-cb-black/
Did a Yahoo search (Google didn't bring anything up). If you check this website, I answered my own question. It wasn't on the market for very long. Thank you.
This is the third web site where I have inquired about a Mossberg 500 Tactical with door breacher barrel 20 gauge from the factory. The guy at the gun store where I ordered it told me I was crazy when I ordered it, Must be a misprint; when it came in, he offered me almost three times what I...