Mr Hsaiz,
I believe you have a nice pair of custom Hawken rifles. But I see very little in the pictures you posted to suggest that these were made by Sharon Rifle Barrel Co. or built from their kits.
Sharon made their own barrels and some of their component parts, but they used L&R percussion locks and double set triggers. The L&R percussion lock was the early version as shown in this picture.
The lock on the percussion rifle you have appears to be the Hawken lock designed by Ron Long. I don't see the "Long's Locks" over "Denver" stamp on the inside of the lock, so it is likely one that was assembled from his lock kit.
Similarly, the hooked percussion breech plug on your rifle is also one of Ron Long's breech plugs, not one of Sharon's. Note the difference in the shape of the snail in the photo above.
The butt plates on your two rifles do not match each other. They also don't look like the butt plates that Sharon used on their rifles. The butt plate that Sharon included with their half stock kit had a toe that swept way back past the heel, as seen in this picture.
They used a different butt plate on their full stock Hawken rifles that was more correct. Track of the Wolf still sells a version of it,
BP-HAWK-SE-I.
This is what a typical Sharon full stock Hawken looks like.
Your percussion rifle appears to have the L&R triggers with the curved front trigger like Sharon used, but the flintlock rifle appears to have Ron Long triggers.
Also, I have not seen any references in adds, catalog, or product reviews that indicated that Sharon offered a flintlock version of their rifle. Even though your flintlock is an L&R lock, the lock plate shape is different than that on the L&R percussion lock and would not fit in the same lock mortise. Sharon would have had to have developed different jigs and inlet guides to cut the flintlock mortise in their pre-carve and pre-inlet stocks. I've seen no evidence that they did this.
Lastly, if those are Sharon barrels on your two guns, they should have Sharon's stamp on them somewhere. It looks like this.
It might be on one of the hidden flats, and you may need to take the barrels out of the stock to find it.
By the way, Sharon did offer factory assembled rifles, but they apparently did not sell many of them. I've only seen a couple.
As I said at the beginning of this post, you have a nice set of custom Hawken rifles. They were built with a mix of component parts like most custom rifles.