The barrel length - in .22 LR - is 99.9% irrelevant for accuracy or velocity. I don't understand the value of hanging anything on the muzzle other than a suppressor. You want to do that?
1. The opinions above are those of a old geezer killjoy.
2. If you intend to hang around, you ought to introduce yourself. A moderator will probably give you the details. At least he won't need to warn you about me.
I haven't considered putting a suppressor on it yet but I imagine that it would be a rifle that I would have for life so it would be good to have the option. I think I will get the 18" with threaded muzzle.
To reply to your second note VThillman I am a 15 year old boy named Loch from Australia who wants to take up shooting with his dad.