I'll go ahead and qualify the value/entry level moniker by explaining that building an optic using only the most germane features for a given use allows Aimpoint to tailor the product and the price to a specific market. This is a budget level RDS in the sense that it's lowering the price of entry into a top tier brand.
Comparing the ACO to the Patrol Rifle Optic (PRO); no NVG level settings, the mount is non-quick release, and there are no lens caps/covers included. The ACO appears to be very similar to the CompM2 featureset. Aimpoint will offer flip covers, anti-glare filters and spare battery holders as accessories for the ACO.
Aimpoint says the ACO will MSRP for $393 and will hit shelves mid-October. With the Aimpoint PRO found easily for $430, it's tough to understand the value of the ACO. If the ACO's street price drops and falls in line $100 or so below the PRO, then we're looking at a $300 RDS that does everything a sport shooter could want.
As always, military members and LEOs would do well to contact Strohman Enterprises for the best price on this and all Aimpoint products.