Do any of you guys own one of these? I'm thinking of getting one in .223 mainly for spotlighting, but i haven't found any decent reviews by googleing so far. 1)How do they shoot? 2)Can you get them with a heavy barrel? Do they cost more? 3)What is the mag capacity for both the internal and DM models in .223rem? 4)Can you buy a larger detatchable mag, say 10 rounds? Thanks guys.