No, he can make it now that he chose alchemist as his job. He didn't choose a job earlier cause he needed to boost his whatchamacallit skill to be able to read the job descriptions.He could have made a gun this entire time and didn't bother to check his status screen...?
Well he's a child, and children who grow up in normal, civilized societies don't need to know these things.Terrible trigger discipline AND muzzle control. 4/10 gun handling.
With his walking skill that negates the weight of anything he carries, why use an MP5 when he can mow them down with a full sized gatling gun fed with a near limitless supply of bullets and coolant from his backpackCan't wait for the King to get a report of him mowing down monsters with an MP5 and then becoming obsessed with getting him back.
Isekai running: You better run, better run, better outrun my bullets!this ain't isekai walking anymore. this is isekai glocking
So basically the reason of not change anything is, he need a high level "Analysis Skill" to make a decent choiceThe gun recipe wasn't available until he switched to the alchemist job. And he didn't want to change jobs before now because he wasn't sure what they'd do or whether he'd be able to switch again later.
You seem to have your firearm progression backwards. Matchlock precedes flintlock precedes percussion cap precedes primer fired.I was expecting a flintlock pistol at best, percussion cap at worst. But I was not anticipating a Beretta 92.