We imagine Halo's Master Chief would drink his coffee from the OPMOD Battle Mug. Featuring a sizable 24-ounce capacity to hold your favorite beverage, the Battle Mug is crafted from a block of CNC-machined 6061 T6 billet aluminum. Details include military-spec 1913 scope rails on the sides, to which you can attach the carry handle from an AR-15 semi-automatic rifle. You can also load on the accessories, like a scope, laser light, holo sight, or any other gear you need for tactical sipping. The Battle Mug has military-spec type III anodized finish, a crenelated base and its own individual engraved serial number. Go here for ordering info.