Some guns need all the internal parts assembled outside the gun with slave pins. Then you slide the fully assembled internals in, and drive out the slave pins with real ones.Well so far I’d have to say it’s a Henry lever action 22lr. I bought one a few weeks ago and brought it home to lube it before the range. Took it apart and now the bolt won’t go back in. I fooled with it for a couple hours and now it’s sitting back in the box it came in waiting for me to ship it back to Henry for them to figure out. For such a simple design I’m either goofing something up really bad or the gun is defective.