+1 Scout or the 951/ 952
The M951 the third digit of the model number describes the mounting which in this case "1" means dual screw type mount.
The M952 means ARMS lever mount, the other characters to the right of the model numbers are either "C" which means a clicker type of push button switch and the "XM07" are both push button and cable pressure pad, the pushbutton and pressure-activated tape switch operate independently, providing switch redundancy. Standard pressure pad cable length is 7" (fits most rifle/ carbine applications).
I've got the M951C mounted on my KAC M4 RAS rail because I prefer the simple pushbutton without wires to tangle with my gear
My M951 is a new model which have a thinner main body and less material than the older model, it's about 10% lighter than before.
A picatinny rail could be added at the bottom of standard handguard to mount the light but in my opinion a drop in rail like the KAC, Samson or Midwest Industries are better than just he add on bottom rail.
Ask Grant (of G&R Tactical) he should have them or even custom made it with LaRue Tactical mount which is the best Surefire mount in my opinion.
AR-15 SP1 owner since 1971
NRA and CRPA life member