M4 gen 1 vs M4 gen 2

[Axey]

I used to have a Benelli M4 that I loved about 11 years ago. Was looking to buy another and I see there is now a gen 2. Any major differences between them or reason to pick one over the other? Thanks!

[CEBEP]

M4 T Pro has different folding stock similar or same to M3. Bugger controls and different forend. It heavier, made of aluminum and no Mlok compatible. Instead you get few small picatinny rails to make your shotgun even heavier. 

[bambihunter]

Very early M4's had different number of gas ports, but those should be older than the 11 years you are talking about.

[Kahamu]

I believe the M4 T Pro has a fixed modified choke where the older ones that aren't the M1014 can be swapped out. Someone correct me if I'm wrong.

[CEBEP]

My T Pro has removable choke.