Benelli Shotgun Parts ID

[NoBeginner]

Recently, I purchased a new (but not in box) shotgun trigger group. Problem is, I can't tell if the trigger group is for an M-1 Tactical...or the more common M2.

 

The only two identifiers I have found are: both sides of the safety have a triangular cover; and on the left side of the trigger group (in a small indented area) directly above the trigger is the number 2.

 

Can anyone tell me which shotgun this trigger group goes to?

 

BTW, I have already been to the Benelli parts list/Customer Service and neither one could identify which shotgun this trigger assembly goes to.

 

Thanks!

[tucker301]

http://www.benelliusa.com/forum/showthread.php?t=13421