So your gun has the MOE M-LOK Forend ??
MOE® M-LOK® Forend – Remington® 870
https://magpul.com/moe-m-lok-forend-remington-870.html?mp_global_color=118
You just need an M-LOK Rail ... like this one ... and to attach a weapons light ....
https://magpul.com/m-lokaluminumrail-5slots.html?mp_global_color=118
My suggestion: get a GG&G light mount.
It fits between the mag tube and the mag cap and allows you to mount a flashlight that won’t move everytime you pump.
The magpul, and cheaper option, would be to buy a magpul rail section and install it where you want on your handguard.[/QUOT
That would work better having the light stationary thanks



























