Hi Al,
I do not own any products from those dealers but I repaired quite a few muskets and musket locks sold by several of them. All of the firearms they sell are made in India and the quality is poor compared with some European commercial repros (Pedersoli) and custom made guns. They are popular with re-enactors, particularly Middlesex Valley, because they sell a wide variety of muskets and other guns at low prices. MVT seems to stand behind their products to some extent. At best, the guns are shootable cartoon versions of the originals, at worst, they are wall hangers that kind of look like the originals if you look from a distance. Stocks often are made of teak with way too much extra wood left on them, inletting ranges from adequate to poor, all the metal is over polished with buffing wheels (every screw hole gets dished out), sometimes locks don't function or spark, and heat treating of lock parts sometimes is not properly done. Don't expect easy replacement of faulty or broken parts. That said, there are many satisfied shooters and re-enactors out there using these guns. There has been heated discussion about barrel safety but it is hard to quantify or actually verify that concern. In short, they are low cost and crudely made vague reproductions of original muskets and the majority seem to be useable shooters. However, do not expect anything that approaches the quality of the originals for which they purport to be copies.
dave