Folks this may have been covered before as I am sure that it has, but did not come across anything. The bolt assy seems to me poorly designed at best. For example the broken extractors, flimsy flapper spring and very lose fitting bolt into the receiver. For the price of the firearm and the longevity of the Mossberg company, I would have expected much better quality. Especially in the extractor design. I have seen much better design's in much cheaper fire arms. Therefore does anyone know of or does a replacement high quality bolt exist?