You can mount a Surefire M-6 to a sporting rifle. If you don't want to drill holes in your nice wood, you could try my system with Velcro in the bottom of the base (Picattiny rail) and on the top of a piece of camo tape on the stock (or even masking tape) you will need two rubber bands to stabilize the set-up.
It is quick detachable by the Weaver ring.
Or if you don't mind a little unobstrusive base in the side of your stock, just use wood screws and epoxie in a small Weaver base.
If you don't want to go to the poor house buying batteries for the M-4, ($19.92 per hour) get my POLAR BEAR that is rechargeable, output 76 more lumens than the M-4 (426 lumens) and will run for 70 minutes on the charge.
It can be put under the rifle by using a Pelican Lite-Saddle, like this rubber mount in the Remington 742 that is holding a Little Glacier Bear (rechargeable 300 lumens)
The Polar Bear is made on the Maglite 3 C "host" but it is very lightweight because it uses Lithium Ion batteries.
Here is a picture of it next to the Surefire M-4.
For short distances (up to 78 yards) you can use the TACM III lights that are better throwers than any other 2 cell Surefire like the 6 P G-2, Z2, C-2 etc. because they have a bigger reflector and it is smooth polished instead of stippled like the Surefires.
In my experience 2 cell Surefires quit when they reach 45 yards.
Here is an example of the TACM III lights with remote switch
For longer ranges in the Surefires you need turboheads, because lumens output along don't do it with the reflectors they have. Those reflectors are designed for Police work, to spread the light in clearing houses, going to a 9 P with a P-91 lamp for 200 lumens you don't increase the range, just the size of the hot spot and the intensity of the light.
For the only application I will use a Surefire 6 P with the P-61 lamp (120 lumens) is for bow hunting by nuisance permit holders in doing culling operations. I install them in bows using the stabilizer as a base, like in this picture.
If you want to reach "way up there" the only light that will allowed you to do that will be the MAG 951 II mounted on the rifle with a Pelican Litle Saddle.
Like this:
You probably will find others option perusing my thread in the B/S/T accessories section, here is the link:
http://www.thehighroad.org/showthread.php?p=2050464#post2050464
It is very different to shoot reflective targets in the range than dark animals with fur drinking light. to see how much luminosity you are loosing shine a laser in a boar or bear fur and compare it to a flat unorganic surface.
Best regards
black bear