So, I just picked up a 870. Kinda wanting to mount a flashlight

>>34855743
new handguard with integrated flashlight. surefire makes one.

>>34855759
was kinda thinking about that, price is a little salty for my taste, but, nut off the table.

I was thinking of getting some kind of mount to go on the barrel.

>>34855759
This. I have a current production DSF-590. Great forend. Got it new for a good deal on Ebay. Still expensive. Worth

I bought their flashlight mount for my Maverick 88 and was very pleased. They have one for the 870 as well: https://www.gggaz.com/shotgun-flashlight-mounts.html

>>34855774
Then get the Elzetta

put an extension on it, and use a railed clamp.