Recently bought this here in the EE but it makes the shotgun too heavy for my liking.
When I bought it the rubber & pressure switch was torn and didn't work properly I sent it off to Surefire and its good as new now.
I tried one of my Malkoff drop in LED conversions for one of my Surefire 6P and it works great so for around ~$35 you could upgrade the light to LED, MUCH brighter.
High end weapon lights preferably with m-lok mount
Magpul 870 furniture