harrington and richardson a822400...worchester,ma.....old rifle? looking for info

[deeds1962]

have this old harrington and richardson rifle........numbers on underside....it is old......it is not a modern rifle (i believe it's old).......will provide pic of needed.....it kind of reminds me of a revolutionary piece style......thanks

 

[Hawg]

It had to be made after 1871. Maybe a trapdoor. Pics would help.