Admittedly they had a great rebate recently when they were sold out. 60-75 rebate....on top of MIDWAY USA coupons. Could not pass that up and bought the optic and the magnifier. I always wanted their magnifier but could never justify the cost.
Yes, I bought the HHS I setups for my 308s; yes, I know, not spec’d, but many users have said they work fine on their AR-10s. If they work with the over-pressured 556 NATO, they may be fine with the AR-10s. I could always swap them with the Mepros.