UPP storage solutions

- Type 6 Fragmentation Grenades now come packed 5 at a time in wooden boxes
- Type 23 8g shotgun shells- buck and slug- come in shotgun boxes

code/modules/projectiles/ammo_boxes/grenade_packets.dm

@@ -27,6 +27,7 @@
 
 var/list/grenade_packets = list(
 	/obj/item/storage/box/packet/high_explosive,
+	/obj/item/storage/box/packet/high_explosive/upp,
 	/obj/item/storage/box/packet/baton_slug,
 	/obj/item/storage/box/packet/flare,
 	/obj/item/storage/box/packet/hornet,
@@ -43,8 +44,16 @@ var/list/grenade_packets = list(
 	name = "\improper HEDP grenade packet"
 	desc = "It contains three HEDP high explosive grenades."
 	icon_state = "hedp_packet"
+	storage_slots = 5
 	content_type = /obj/item/explosive/grenade/high_explosive
 
+/obj/item/storage/box/packet/high_explosive/upp
+	name = "\improper Type 6 fragmentation grenade packet"
+	desc = "It contains three Type 6 fragmentation grenades."
+	icon_state = "woodbox"
+
+	content_type = /obj/item/explosive/grenade/high_explosive/upp
+
 /obj/item/storage/box/packet/baton_slug
 	name = "\improper HIRR baton slug packet"
 	desc = "It contains three HIRR (High Impact Rubber Rounds) Baton Slugs."

code/modules/projectiles/magazines/shotguns.dm

@@ -84,6 +84,26 @@ var/list/shotgun_boxes_12g = list(
 	desc = "A box filled with buckshot spread shotgun shells, USCM special type. 12 Gauge."
 	icon_state = "special"
 	default_ammo = /datum/ammo/bullet/shotgun/buckshot/special
+
+/obj/item/ammo_magazine/shotgun/buckshot/heavy
+	name = "box of heavy buckshot shells"
+	desc = "A box filled with buckshot spread shotgun shells. 8 Gauge."
+	icon = 'icons/obj/items/weapons/guns/ammo_by_faction/upp.dmi'
+	icon_state = "heavy_buckshot"
+	default_ammo = /datum/ammo/bullet/shotgun/heavy/buckshot
+	transfer_handful_amount = 4
+	max_rounds = 24
+	caliber = "8g"
+
+/obj/item/ammo_magazine/shotgun/slug/heavy
+	name = "box of heavy slug shells"
+	desc = "A box filled with slug shotgun shells. 8 Gauge."
+	icon = 'icons/obj/items/weapons/guns/ammo_by_faction/upp.dmi'
+	icon_state = "heavy_slug"
+	default_ammo = /datum/ammo/bullet/shotgun/heavy/slug
+	transfer_handful_amount = 4
+	max_rounds = 24
+	caliber = "8g"
 //-------------------------------------------------------
 
 /*