As a Specialist job on RF Online you can craft fire weapon (gatling, launcher and grenade launcher) with these recipe :

Image	Item Name	Weapon Level	Required Craft PT	Material
	Hand Gun	1	1	1 1
	Machine Gun	2	1	2 1
	Enforcer	3	1	3 1
	Rattle Gun	5	1	5 1
	Shot Gun	7	3	10 1
	Beam Gun	10	7	3 1 1
	Stout Gun	12	9	5 2 1
	Rifle	15	13	9 3 1
	Assault Rifle	18	18	14 4 2
	Uzi	20	22	18 6 2
	Rail Gun	22	25	24 7 3
	Plasma Gun	25	31	33 10 4
	Laser Gun	28	38	46 14 5
	Lightning Gun	30	42	9 13 5 5
	Gatling Gun	35	55	15 20 7 7
	Bolt Rifle	40	68	22 30 10 10
	Vulcan	45	83	7 34 12 12 12
	Hora Vulcan	50	99	9 52 18 18 18
	Dark Gatling	55	99	12 74 25 25 25
	Sagan Gatling	63	99	200 67 67 270 10
	Saint Gatling	65	99	200 90 90 360 20
	Advanced Saint Gatling	67	99	200 112 112 450 30
	Patron Gatling	70	99	200 135 135 540 50
	Mini Rocket Launcher	15	13	9 3 1
	Rocket Launcher	18	18	14 4 2
	Redeemer	20	22	19 6 2
	Mini Flame Thrower	22	25	24 7 3
	Roburite Shooter	25	31	25 10 4
	Mini Faust	28	38	49 15 5
	Cannon	30	42	10 13 5 5
	Bazooka	35	55	15 21 7 7
	Flame Thrower	40	68	23 31 11 11
	Missile Launcher	45	83	7 34 12 12 12
	Hora Faust	50	99	9 53 18 18 18
	Hora Akeron	50	99	9 53 18 18 18
	Dark Flame Launcher	55	99	12 76 26 26 26
	Sagan Flame Launcher	63	99	200 67 67 270 10
	Saint Flame Launcher	65	99	200 90 90 360 20
	Advanced Saint Flame Launcher	67	99	200 112 112 450 30
	Patron Flame Launcher	70	99	200 135 135 540 50
	Sagan Grenade Launcher	63	99	200 67 67 270 10
	Saint Grenade Launcher	65	99	200 90 90 360 20
	Advanced Saint Grenade Launcher	67	99	200 112 112 450 30
	Patron Grenade Launcher	70	99	200 135 135 540 50