I bought a 870 SF in 20ga in the late 80s new for my son, his first gun, and it had the 21" Rem choked barrel, then an 1100 SF in 20 ga in 92 new, for my second son's first gun, it also had the 21" barrel with the Rem chokes. I distictly remember the barrel lengths since I was debating for one for myself or the Citori with the 24" barrels, which the guns had the same overall length. I got the Citori for myself. Since I had my FFL back then they were still in production and current models when I bought them.