Complex sentence: A vast range of unique rifles from Musgrave's excellent custom shop exists, including beautiful custom rifles that were created according to customer specifications, usually sporting high quality metal components, beautiful high grade wood, inspiring engraving and metal inlet work, and fine checkering.
Split into simpler sentences: A vast range of unique rifles from Musgrave's excellent custom shop exists. Many beautiful custom rifles were created here based on customer specifications, usually sporting high quality metal components, beautiful wood and fine checkering.