remington 1100 20 ga. lt pistons

Remington 1100 20 ga. LT piston, no. 73 on the schematic. I have one top (convex) left. In 1966 Remington built the 20 gauge on a 12 gauge frame. In 1970 Remington built the 20 gauge on a 20 gauge frame labeled LS. In 1977 Remington built the 20 gauge on a 20 gauge frame labeled LT.