diff --git a/code/modules/projectiles/magazines/rifles.dm b/code/modules/projectiles/magazines/rifles.dm
index 42c79fdab858..3d1b7088fa83 100644
--- a/code/modules/projectiles/magazines/rifles.dm
+++ b/code/modules/projectiles/magazines/rifles.dm
@@ -471,8 +471,8 @@
 	default_ammo = /datum/ammo/bullet/rifle
 	max_rounds = 30
 	gun_type = /obj/item/weapon/gun/rifle/rmc_f90
-	ammo_band_icon = "+m41a_band"
-	ammo_band_icon_empty = "+m41a_band_e"
+	ammo_band_icon = "+aug_band"
+	ammo_band_icon_empty = "+aug_band_e"
 
 /obj/item/ammo_magazine/rifle/rmc_f90/marksman
 	name = "\improper F903A1 Marksman magazine (10x24mm)"
@@ -483,3 +483,19 @@
 	gun_type = /obj/item/weapon/gun/rifle/rmc_f90/scope
 	max_rounds = 20
 	ammo_band_color = AMMO_BAND_COLOR_AP
+	ammo_band_icon = "+aug_dmr_band"
+	ammo_band_icon_empty = "+aug_dmr_band_e"
+
+/obj/item/ammo_magazine/rifle/rmc_f90/heap
+	name = "\improper F903 HEAP magazine (10x24mm)"
+	desc = "A 10mm armor piercing high explosive assault rifle magazine used by the royal marines."
+	default_ammo = /datum/ammo/bullet/rifle/heap
+	ammo_band_color = AMMO_BAND_COLOR_HEAP
+
+/obj/item/ammo_magazine/rifle/rmc_f90/marksman/heap
+	name = "\improper F903A1 Marksman magazine (10x24mm)"
+	desc = "A 10mm armor piercing high explosive assault rifle magazine used by the royal marines."
+	icon_state = "aug_dmr"
+	item_state = "aug_dmr"
+	default_ammo = /datum/ammo/bullet/rifle/heap
+	ammo_band_color = AMMO_BAND_COLOR_HEAP
diff --git a/icons/obj/items/weapons/guns/ammo_by_faction/twe_ammo.dmi b/icons/obj/items/weapons/guns/ammo_by_faction/twe_ammo.dmi
index 2e8a3d18724d..6d7b49c17612 100644
Binary files a/icons/obj/items/weapons/guns/ammo_by_faction/twe_ammo.dmi and b/icons/obj/items/weapons/guns/ammo_by_faction/twe_ammo.dmi differ