see how this goes

code/modules/unit_tests/gun_crafting.dm

@@ -1,5 +1,11 @@
 //Makes sure preinstalled frame parts can be removed an reinstalled
 /datum/unit_test/gun_crafting/Run()
+	var/list/guns = typesof(/obj/item/gun)
+	for(var/gunType in guns)
+		var/obj/item/gun/G = new gunType  // Create an instance of the gun
+		if(G.magazine)  // If the gun has a magazine
+			TEST_FAIL("Gun: [G.type], Magazine: [G.magazine.type], Caliber: [G.magazine.caliber]")
+/*
 	var/mob/living/carbon/human/human = allocate(/mob/living/carbon/human)
 	for(var/frame_type in subtypesof(/obj/item/part/gun/frame))
 		var/obj/item/part/gun/frame/frame = new frame_type
@@ -8,5 +14,4 @@
 			frame.eject_item(installedPart, human)
 			frame.handle_part(installedPart, human)
 		TEST_ASSERT_EQUAL(frame_parts, frame.installed_parts, "Frame parts to match there original contents. I assume frame parts were not reinstalled correctly.")
-
-
+*/