The barrel change on the -60 was fairly simple, but awkward. The bipod is attached to the barrel, along with the piston cylinder, resulting in a heavier unit. There is also no handle, so handling a hot barrel was problematic (an asbestos glove was provided for the purpose).
The actual barrel change was facilitated by a simple lever, which worked well, but if the gun was on the bipod, the gunner had to cradle the gun while the a-gunner did the change.
The barrel itself was heavy enough and chrome-lined, so it held up pretty well, but I was never in a situation that required sustained fire.