So the mc is clearly unable to fight these guys hand to hand and requires his guns. He has 2 guns and lets be a bit generous and assume each mag holds 21 bullets. He probably won't have more than 3 extra mags per gun + the one already in the guns, especially since he wasn't prepped to fight anyone when he died/transfered. So 8 mags total, meaning he has 168 bullets - 20 or so from the gunfight earlier.
I wonder how he's going to take over murim with 148 bullets or how they are going to supply him with more