Great combination of sights, but you have options - Burris AR-332 3x32mm Red Dot Sight Kit

This kit combines the AR-332 sight with the popular FastFire Reflex sight. It comes with in a handy waterproof case and has flip-up covers and a honeycomb sunshade. It's easy to mount, zero, and use. The results at close ranges is outstanding and having both an optical and reflex on the same rifle gives maximum flexibility.

Note that this kit includes the FastFire II (that's version 2) and there's a newer FastFire on the market today. If you get this kit, you forgo the new features provided by the new FastFire III (version 3). What you get in return is the waterproof case and the honeycomb sunshade. I've shot both and the performance of the two FastFire versions is virtually identical in daylight shooting. I didn't try them in low-light situations.

I recommend this kit for it's convenience and performance. It delivers the results as advertised. However, if you're a do-it-yourselfer and don't mind assembling the pieces yourself, forgo the watertight case and buy the AR-332 and FastFire III separately so you have the latest versions.