Stamped on the barrel is "WINCHESTER 12 GA-2-3/4 & 3" INVECTOR PLUS CHOKE SUPER X MODEL 2." In small letters, "MFG BY FN-BELGIUM. IMPORTED BY R.A. CO, ARNOLD, MO."
The muzzle is not ported. When I acquired it four or five years ago, I looked into gas pistons for it. I don't remember what all I looked at back then, but I concluded that it would function with pretty much anything I feed it. It does fine with regular 2-3/4" dove loads. I like the gun very much.
