diff --git a/_maps/map_files/stations/boxstation.dmm b/_maps/map_files/stations/boxstation.dmm
index f73acb7c584..6597cda95a0 100644
--- a/_maps/map_files/stations/boxstation.dmm
+++ b/_maps/map_files/stations/boxstation.dmm
@@ -87979,7 +87979,7 @@
 /obj/item/reagent_containers/syringe,
 /obj/item/reagent_containers/syringe,
 /obj/item/trash/liquidfood,
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/item/trash/spacetwinkie,
 /obj/item/trash/raisins,
 /obj/item/trash/raisins,
diff --git a/_maps/map_files/stations/cerestation.dmm b/_maps/map_files/stations/cerestation.dmm
index fbbc5126d48..43fef9766d2 100644
--- a/_maps/map_files/stations/cerestation.dmm
+++ b/_maps/map_files/stations/cerestation.dmm
@@ -48755,9 +48755,7 @@
 	},
 /area/station/medical/storage/secondary)
 "iIS" = (
-/obj/item/trash/spentcasing{
-	icon_state = "r-casing"
-	},
+/obj/item/trash/spentcasing/bullet,
 /obj/effect/decal/cleanable/blood/splatter,
 /turf/simulated/floor/plating{
 	icon_state = "asteroidplating"
@@ -54973,9 +54971,7 @@
 /area/station/maintenance/asmaint)
 "kpK" = (
 /obj/effect/decal/cleanable/blood/drip,
-/obj/item/trash/spentcasing{
-	icon_state = "r-casing"
-	},
+/obj/item/trash/spentcasing/bullet,
 /turf/simulated/floor/plating{
 	icon_state = "asteroidplating"
 	},
@@ -67874,9 +67870,7 @@
 	},
 /area/station/engineering/control)
 "ohJ" = (
-/obj/item/trash/spentcasing{
-	icon_state = "r-casing"
-	},
+/obj/item/trash/spentcasing/bullet,
 /turf/simulated/floor/plating{
 	icon_state = "asteroidplating"
 	},
diff --git a/_maps/map_files/stations/emeraldstation.dmm b/_maps/map_files/stations/emeraldstation.dmm
index 862e23ca87a..63fb7cad390 100644
--- a/_maps/map_files/stations/emeraldstation.dmm
+++ b/_maps/map_files/stations/emeraldstation.dmm
@@ -32941,7 +32941,7 @@
 /turf/simulated/wall,
 /area/station/science/research)
 "ggS" = (
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/spawner/random_spawners/blood_maybe,
 /obj/effect/landmark/burnturf,
 /turf/simulated/floor/plasteel{
@@ -34302,7 +34302,7 @@
 /area/station/public/dorms)
 "gtw" = (
 /obj/effect/landmark/burnturf,
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/spawner/random_spawners/cobweb_left_rare,
 /turf/simulated/floor/plating,
 /area/station/maintenance/aft2)
@@ -47269,7 +47269,7 @@
 	},
 /area/station/security/range)
 "iOO" = (
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/spawner/random_spawners/blood_maybe,
 /obj/effect/decal/cleanable/dirt,
 /turf/simulated/floor/plasteel{
@@ -48222,7 +48222,7 @@
 /turf/simulated/floor/plasteel,
 /area/station/hallway/primary/central/north)
 "iXG" = (
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/decal/cleanable/dirt,
 /turf/simulated/floor/plasteel{
 	icon_state = "redyellowfull"
@@ -63939,7 +63939,7 @@
 "lWJ" = (
 /obj/effect/decal/cleanable/dirt,
 /mob/living/simple_animal/mouse,
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /turf/simulated/floor/wood,
 /area/station/maintenance/dorms/starboard)
 "lWR" = (
@@ -70922,7 +70922,7 @@
 /area/station/supply/lobby)
 "npe" = (
 /obj/effect/landmark/burnturf,
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/decal/cleanable/dirt,
 /turf/simulated/floor/plating,
 /area/station/maintenance/aft2)
@@ -90701,7 +90701,7 @@
 	},
 /area/station/hallway/primary/central/sw)
 "qVm" = (
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/landmark/burnturf,
 /turf/simulated/floor/plating,
 /area/station/maintenance/dorms/port)
@@ -94418,7 +94418,7 @@
 /obj/item/reagent_containers/syringe,
 /obj/item/reagent_containers/syringe,
 /obj/item/trash/liquidfood,
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/item/trash/spacetwinkie,
 /obj/item/trash/raisins,
 /obj/item/trash/raisins,
@@ -95538,7 +95538,7 @@
 /turf/simulated/floor/wood,
 /area/station/service/library)
 "rMs" = (
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/decal/cleanable/dirt,
 /obj/machinery/economy/atm/directional/west,
 /turf/simulated/floor/plating,
@@ -103374,7 +103374,7 @@
 /area/station/supply/sorting)
 "tic" = (
 /obj/item/circuitboard/arcade/orion_trail,
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/decal/cleanable/dirt,
 /obj/machinery/atmospherics/pipe/simple/hidden/cyan{
 	dir = 4
@@ -109862,7 +109862,7 @@
 /area/station/science/research)
 "utj" = (
 /obj/item/chair/stool,
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/decal/cleanable/dirt,
 /obj/item/food/candy/coin,
 /obj/effect/landmark/burnturf,
@@ -112005,7 +112005,7 @@
 /turf/simulated/floor/carpet,
 /area/station/public/mrchangs)
 "uMC" = (
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /obj/effect/decal/cleanable/dirt,
 /turf/simulated/floor/plating,
 /area/station/maintenance/dorms/starboard)
@@ -118640,7 +118640,7 @@
 "vYs" = (
 /obj/item/dice/d6,
 /obj/effect/decal/cleanable/dirt,
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /turf/simulated/floor/wood,
 /area/station/maintenance/dorms/starboard)
 "vYu" = (
diff --git a/_maps/map_files/stations/metastation.dmm b/_maps/map_files/stations/metastation.dmm
index 749a1eba6c9..ed6bbd5d7f3 100644
--- a/_maps/map_files/stations/metastation.dmm
+++ b/_maps/map_files/stations/metastation.dmm
@@ -70715,7 +70715,7 @@
 /area/station/security/permabrig)
 "oMo" = (
 /obj/structure/lattice,
-/obj/item/trash/spentcasing,
+/obj/item/trash/spentcasing/shotgun,
 /turf/space,
 /area/space/nearstation)
 "oMJ" = (
diff --git a/tools/UpdatePaths/Scripts/27180_spentcasings.txt b/tools/UpdatePaths/Scripts/27180_spentcasings.txt
new file mode 100644
index 00000000000..105c9b966f9
--- /dev/null
+++ b/tools/UpdatePaths/Scripts/27180_spentcasings.txt
@@ -0,0 +1,2 @@
+/obj/item/trash/spentcasing{icon_state="r-casing"} : /obj/item/trash/spentcasing/bullet
+/obj/item/trash/spentcasing : /obj/item/trash/spentcasing/shotgun
diff --git a/tools/maplint/lints/spentcasing_roottype.yml b/tools/maplint/lints/spentcasing_roottype.yml
new file mode 100644
index 00000000000..c9665ccb12d
--- /dev/null
+++ b/tools/maplint/lints/spentcasing_roottype.yml
@@ -0,0 +1,3 @@
+help: 'Use one of the spent casing subtypes for mapping.'
+=/obj/item/trash/spentcasing:
+  banned: true