i checked all the screws and i couldnt get them to turn any with the slightest force. the only one i am curious about is the one inside the cylinder housing. its tiny and it looks as it may come loose with some shooting, so i tightend it down a tad and then the clyinder wouldnt open. went to far. i think i may loctite it into place where it is able to get the cylinder open with ease. anyone else have to do this? ill post pics as soon as i get them uploaded. this little thing is pretty neat.