I can't for the life of me figure this out.
I've got a trigger group from what I believe is an M1 carbine (my late grandfather threw a bunch of parts into a box for me as replacements for my M1), but I cannot for the life of me identify a specific part on the trigger group and was hoping you all could help me.
I can't find this part on any diagram I pull up on the net. It's the part right "in front" of the Hammer with the "B" stamp.
Side View- part is to the right of the hammer:

Top view- to the left of the "gap"

Back view (blurry, sorry)- meant to so the "hook" for lack of better word on the side of the part (on the right)

any help is appreciated folks! Thanks!
I've got a trigger group from what I believe is an M1 carbine (my late grandfather threw a bunch of parts into a box for me as replacements for my M1), but I cannot for the life of me identify a specific part on the trigger group and was hoping you all could help me.
I can't find this part on any diagram I pull up on the net. It's the part right "in front" of the Hammer with the "B" stamp.
Side View- part is to the right of the hammer:

Top view- to the left of the "gap"

Back view (blurry, sorry)- meant to so the "hook" for lack of better word on the side of the part (on the right)

any help is appreciated folks! Thanks!