You'll love it. But do yourself a favour and order the medium twilight aperture. I find the supplied aperture too large for my liking. I shoot better with the medium, and find it adequately large for hunting, even in heavy brush. Some shooters prefer an even larger aperture in the thick stuff and will remove the insert. See what you prefer, anyway. The smallest aperture is a great one to use at the range, but I wouldn't hunt with it under normal conditions. I know SIR sells apertures; who else may have them is a mystery to me. Enjoy the sight!
BTW, I have a Williams FP on my 336A and mounted a Williams Firesight up front. I'm still getting used to the thickness of the Firesight compared to the factory bead, but my initial groups are around 2.5 inches for 3 shots at 100 yards....easily accurate enough for hunting. You may want to consider the Firesight, especially if, as frequently happens, your front sight is too short to use with the receiver sight. If this happens, the rifle will shoot high even with the sight adjusted as low as it can go.
I take it you're in the Ottawa area. Benny's pro shop at the Stittsville range stocks Firesights if you want one. Hopefully you won't need to swap front sights. A friend and I both had 1970's-vintage '94's with Williams peeps. His was a 5D, mine was an FP. My rifle shot 3" high at 100 yards with most ammo. His shot about 6 or 7 inches high, so he had a friend braze a piece of copper wire onto the top of his sight, and that did the trick. He once used that rifle to drop a good-sized buck at over 200 yards.