I am working on it. It turns out it is more challenging than I expected. The prop isn't fitted properly so i needed to get it exported from ps4 files, alligned it and now I am attempting to convert to gta 5 format so i can put it in rdr2 format. Picture:
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Adding custom models is pretty much near impossible. But I am working on it. Once I figure out how to convert them I will be willing to add a musket or any other gun.