ShootAI, I have no comment on barrel lengths but you are going to love the A400. It comes with tons of options but it is thoughtfully configured with the most common options already configured. My very first shot from it I killed a greenhead that I jumped on the Rio Grande on my way to my spot to toss some decoys. My gun store said every option is not available quickly but I got the 28", optifade, w/ kickoff. I didn't know what the kickoff was but I like it now. You can change the stock length, chokes, magazine plug, stock angle. I changed nothing and it is great.
