This rifle is a US model 1816 Hall 52 cal made at Harper Ferry arsenal. 

1st non breach loading US Milliary Rifle .Barrel is rifled and given to special units , saw some action in Civil War .

These rifles started out Flintlocks and were converted to percussion by the factory .

Works well , I shot it a few times with a reduced load , easy to load , like a pistol not a rifle .

Some information on utube RIA has a video on these .

$800 , will ship at buyers expense,  it's really long .

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