Wootang,
The breech is split into two separate pieces, a top and bottom, secured by a through bolt. The top half includes the recess for the barrel hooks and the top strap. The lower section is the lower half of the frame. As for flash fences close examination shows none existed as the breech balls are split into two separate halves with no provision for flash fences. The flat side hammers are original. The only hardware not original are the hammer screws and nipples. The ram rod is also original.
