Horizontal line in frame

[Charlie Drage]

New here and to cap and ball! Is that line in the frame to assist in capping with a capper?



https://upload.wikimedia.org/wikipedia/commons/d/df/Colt_Navy_Model_1851.JPG

[Charlie Drage]

I've noticed that some guns don't have it!?

[St. George]

More like for the convenience of lining it up for your thumb.

Scouts Out!

[Charlie Drage]

Does anyone know if that was done afterward or were some guns manufactured like that?

[Drydock]

That was an upgrade by Colt in the "New Model" (round barrel) series.  It should be found on all Colt designs and older model production after 1860.  Helps in alignment and provided additional clearance for a capper.  The Italians can be inconsistent in it's application

[Coffinmaker]

  PLUS ONE too Drydock   

And someone has been beating on an ill fitted wedge with some kind of hammer or other steel object.

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