Question about Beretta A400

[VinnyQC]

I don't really know much about shotguns. I went to my local LGS and tried shouldering a few models, and the expensive A400 felt the most natural to me (of course, a cheaper model couldn't fit me better, damn Murphy's law...)

What's the difference between an "A400 Xtreme" and "A400 Xtreme Plus"? Both are similarly priced.

 

[Beretta-Skeet]

Pretty much the same gun with a few nice upgrades.

14 inch forcing cones, larger charging handle, larger bolt release, enlarged loading port, steelium plus barrel, soft comb.

 

[VinnyQC]

Thank you for the answer. Can I ask one more? What's the difference between the A350 and an A400? For example thses 2:
https://www.reliablegun.com/en/bere...stock-wkick-off-4rds-optimachoke-hp-flush-cmf
https://www.reliablegun.com/en/bere...-vented-rib-realtree-max-5-4rds-optima-hp-mod

I guess Realtree is a different camo pattern than unico-camo-max5, but other then that?