fix

code/game/objects/items/weapons/storage/boxes.dm

@@ -199,6 +199,17 @@
 	for(var/i in 1 to 7)
 		new /obj/item/ammo_casing/r4046/chem/EMP(src)
 
+//Explosion 40x46mm
+/obj/item/weapon/storage/box/r4046/explosion
+	name = "box of 40x46mm explosion grenades (WARNING)"
+	desc = "<span class='bold'>WARNING: These devices are extremely dangerous and can cause injury.</span>"
+	icon_state = "4046_box(exp)"
+
+/obj/item/weapon/storage/box/r4046/explosion/atom_init()
+	. = ..()
+	for(var/i in 1 to 7)
+		new /obj/item/ammo_casing/r4046/explosive(src)
+
 //EMPs
 /obj/item/weapon/storage/box/emps
 	name = "box of emp grenades"

code/modules/cargo/packs.dm

@@ -410,6 +410,16 @@ var/global/list/all_supply_groups = list("Operations","Security","Hospitality","
 	access = access_armory
 	group = "Security"
 
+/datum/supply_pack/ballistic/exp4046
+	name = "40x46mm explosion grenades"
+	contains = list(/obj/item/weapon/storage/box/r4046/explosion,
+					/obj/item/weapon/storage/box/r4046/explosion)
+	additional_costs = 520
+	crate_type = /obj/structure/closet/crate/secure
+	crate_name = "40x46mm explosion grenades"
+	access = access_armory
+	group = "Security"
+
 /datum/supply_pack/ballistic/m79
 	name = "m79 grenade launcher"
 	contains = list(/obj/item/weapon/gun/projectile/grenade_launcher/m79,