The confusion is likely due to the new accustock. When they came out with this model(s) they took the "flutes" off of the barrel nut. It still has the barrel nut (ie. threaded barrel), but does not have as much "ugly" factor as the previous barrel nut. I have a Max 1 260 as well as two other 110 and 116 models with the accustock that have this same non-fluted nut. All are definetly threaded, but the only models I do not know about are the 25 and 40 which do not have an apparent barrel nut, but are likely still threaded. T.S.
