Easiest To Work On?

[recon]

So which rifles are the easiest to work on? Or are they all the same? Basically putting muzzle breaks on.

[KurtsKustom]

They're all about the same to me. The bolt rifles & AR's (they're 'round' & concentric) are the easiest for me to swing. FAL's, AK's, H&K's, are all on the square and warrant a chuck change, along with added indication chores. Thx