I know about Bass Pro and their service, but they carry this Bushnell that I have and will match the price. Take a look through it before you spend any money. I love mine, but I do not do those 3 gun competitions. It is a great scope. This is the best price I have found.
I had a Leupold 3-9x40mm on my Colt LE6920 M4 and changed it for a Bushnell AR/223 scope with a 4.5-18x40mm zoom. It is a great scope and just as clear or clearer then my Vortex 6-24x50mm PST FFP MOA scope. I can't tell the difference between 3 power and 4.5 power, but at 18 power it is no contest when you want enough power to see your bullet holes in your target at 100 yds. This is the best price I have found.