Help with Boggie 73 part???

[Long Fingers, SASS#56813]

Does anyone know what this is and where it goes. Fell out while cleaning. 
never seen this in other 73 rifles, assume it’s something Boogie puts in??? 

[Tarheel Doc]

That is to secure your firing pin extension to the bolt. A stainless steel pin goes through that and the bolt

[Garrison Joe, SASS #60708]

Nope, it's the key that holds the Firing Pin Extension to the Bolt.  A VERY CRITICAL part that you need to put back in the gun BEFORE FIRING it.  (This is not something specific to just Boogie kits.  It now in all Uberti 73s)

 

The redesigned Uberti bolts starting about 4 years ago have all had this connection between the bolt and FPE.  Before that, a 1/16" or so (very thin) cross pin connected the parts.  They didn't fail often, but enough that powers that be decided a new design was warranted.

 

good luck, GJ

[Dusty Devil Dale]

It slides into a slot above the front left toggle link.  The toggle pin holds it in place.  Its purpose is to connect the bolt and firing pin extension.   The extension has to be rotated correctly with respect to the hammer and pressed slightly forward toward the muzzle (against the fp return spring)  in order for the tang to slide in.  The long side of the little tang goes in the bottom of the slot, facing the fp extension.  

[Long Fingers, SASS#56813]

23 minutes ago, Dusty Devil Dale said:

It slides into a slot above the front left toggle link.  The toggle pin holds it in place.  Its purpose is to connect the bolt and firing pin extension.   The extension has to be rotated correctly with respect to the hammer and pressed slightly forward toward the muzzle (against the fp return spring)  in order for the tang to slide in.  The long side of the little tang goes in the bottom of the slot, facing the fp extension.  

Thanks guys, I got it back together. 
Made sense after it was explained were it goes. My other 73s don’t have that. Hate when stuff goes spoing and have no idea what it is. 
Thanks, LF.