UPDATE - Please check your local Cabela's Ad. This rifle is not advertised in all stores, when not on sale it is $699.99. Click on Store Locator, select your store, scroll down and click on Cabela's 50th Anniversary Sale ad. Cabela's offers in it's weekly ad (page 3) this Bushmaster .223 with Red Dot and Carbon-Composite upper and lower receiver. Includes two 30-round magazines, soft case and sling.

Carbon 15 with Red Dot – This fast-handling .223 features an ultralight, carbon-15-composite molded upper and lower, adjustable stock and a lightweight 16" barrel with flash suppressor. Includes a Bushnell TRS-25 red-dot sight and two 30-round magazines.

Bushmaster With TRS-25 Red Dot for $649.99 in-store only. Carbon upper and lower. Includes two 30-round magazines, soft case and sling.
Caliber: 5.56mm or .223 Rem.
Magazine Capacity: 30 rounds (accepts all M16/AR-15 type)
Overall Length: 34.5” [87.63 cm]
Barrel Length: 16” [40.6 cm]
Rifling: 1 in 9" R.H. twist/ 6 grooves & lands
Weight w/o magazine: 5.1lbs
Weight of empty magazine: .25 lbs [.11 kg]
Weight of loaded magazine: 1.0 lbs. [.45 kg]
Mode of Operation: Gas Operated /
Semi-Automatic
Bushmaster 90689

Click Here to see more info on Cabela's website. Navigate to the bottom of the page and it is the last rifle in the table.

You could make this deal slicker by buying some of these Cabela's Gift Cards at 12% discount ($100 gift card for $88)