Odd Question about Exposed Hammer Mod.

[dfletcher]

My guess based on the OP description is the HiPower SFS as others mentioned

Agree. Gunsmith installation (although not needed) of the part and that a decocker was not involved.

BHP Solutions and Cylinder & Slide sell them.

https://www.youtube.com/watch?v=4HqE1unwKKI

There's one for a 1911 too. Hmmmmm.

[Tinknocker]

As a tinknocker for 43yrs I would advise against using silicone caulk, it tends to peel off metal with time use sikaflex it will do the job on any gun.