[Joe 6-pack]

That's the exact Burris prism site I have on my AR-10A4 (carbine), and yes it's a sweetie. I also have the kill-flash to cover the objective lens and the quick-detach mount, which I highly recommend. I've experimented with the mount pretty extensively, and it will allow the site to be removed and remounted with virtually no loss of zero.

The BDC reticle is designed primarily for 5.56, but with practice you can learn to mentally calibrate it for 7.62.

[Travis McGee]

I use the flash hider tube also, but I didn’t want to get too far in the weeds.

I also put a clear hinged lens cover on the eyeball end. Before, I had the opaque hinged Burris covers. Now I leave the flash hider end uncovered, and a clear hinged cover on the close end. This way a fast shot can still be made without needing to flip the cover back.

[Travis McGee]

Good point. Any BDC can be used for any caliber once you dope it out in your head. I like to tape a mini dope sheet right to the stock for later reference.