Browning made the 300 um in stainless stalker and in the medallion model a-bolts. They discontinued it the year but the stainless ones are all over the net for sale. Most are brand new, dealers are trying to get rid of them. I got a medallion about 2 months ago brand new for $150 dollars off of msrp. Yes they have the detachable mag. I hope this helps!!
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