Weaver Top Mount Base Winchester 1300 Shotgun
I looked up the listing for this shotgun top mount base and it gave these two numbers: #416M and #54.
The base(s) may need to be ordered, but it's unclear whether either base would fit or that both are needed. The Brownell's listing shows the 416M in the One-Piece/Set column, but shown each in separate parentheses (416 M)(54). Listings calling for all two-piece sets have both numbers within the same parentheses, i.e. (45M, 46M).
Anyone here ever scope a Winchester 1200 Pump shotgun with Weaver Top Mounts?