i really dont mind buying used guns, my last 10 or so purchases have all been used pieces. just wondering if you guys have a way of guestemating how many rounds have been through the pipe. i use the wear on the outside of the barrel as an indicator but it may not be of any value. here is a used 23 that i bought a couple of years ago, i put maybee 500 rounds through it myself. can you take a guess, i would have to say no more than 1000 before i got ahold of it.