yes one of the three, set screw holes went all the way through , but this did not cause my problem. The bore sight did . I usually only use it at home but I was swapping scopes between two rifles so took it to the range with me( it won't happen again). If Keltec will sell me a barrel and receiver only , for a few hundred bucks , then it's worth it. I don't need the stock , forend, sights,mags that come with the package. And the barrel and receiver is one unit, so no installation required. If I sell it for parts I prob get less than if I reassembled and sold, depending on what Keltec and vault does for me. Anyway no matter what happens, I don't really care, cause I just ordered a XCR-L keymod

. Which rate of twist I wonder?