diff --git a/code/modules/crafting/recipes.dm b/code/modules/crafting/recipes.dm
index 6a53af52426..51287eaf20b 100644
--- a/code/modules/crafting/recipes.dm
+++ b/code/modules/crafting/recipes.dm
@@ -117,6 +117,16 @@
 	tools = list(/obj/item/weapon/screwdriver)
 	time = 5
 
+/datum/table_recipe/frag12
+	name = "FRAG-12 Shell"
+	result = /obj/item/ammo_casing/shotgun/frag12
+	reqs = list(/obj/item/ammo_casing/shotgun/techshell = 1,
+				/datum/reagent/glycerol = 5,
+				/datum/reagent/toxin/acid = 5,
+				/datum/reagent/toxin/acid/polyacid = 5,)
+	tools = list(/obj/item/weapon/screwdriver)
+	time = 5
+
 /datum/table_recipe/ishotgun
 	name = "Improvised Shotgun"
 	result = /obj/item/weapon/gun/projectile/revolver/doublebarrel/improvised
diff --git a/code/modules/projectiles/ammunition/ammo_casings.dm b/code/modules/projectiles/ammunition/ammo_casings.dm
index a53b80ca1ed..4cf1351fbf1 100644
--- a/code/modules/projectiles/ammunition/ammo_casings.dm
+++ b/code/modules/projectiles/ammunition/ammo_casings.dm
@@ -96,6 +96,12 @@
 	icon_state = "ishell"
 	projectile_type = /obj/item/projectile/bullet/incendiary/shell
 
+/obj/item/ammo_casing/shotgun/frag12
+	name = "FRAG-12 slug"
+	desc = "A high explosive breaching round for a 12 gauge shotgun."
+	icon_state = "heshell"
+	projectile_type = /obj/item/projectile/bullet/frag12
+
 /obj/item/ammo_casing/shotgun/incendiary/dragonsbreath
 	name = "dragonsbreath shell"
 	desc = "A shotgun shell which fires a spread of incendiary pellets."
@@ -157,4 +163,4 @@
 	desc = "A cased high explosive grenade that can only be activated once fired out of a grenade launcher."
 	caliber = "40mm"
 	icon_state = "40mmHE"
-	projectile_type = /obj/item/projectile/bullet/a40mm
\ No newline at end of file
+	projectile_type = /obj/item/projectile/bullet/a40mm
diff --git a/code/modules/projectiles/projectile/special.dm b/code/modules/projectiles/projectile/special.dm
index a359fb02159..337ccb32d8c 100644
--- a/code/modules/projectiles/projectile/special.dm
+++ b/code/modules/projectiles/projectile/special.dm
@@ -168,3 +168,14 @@ obj/item/projectile/kinetic/New()
 	if(!gun)
 		qdel(src)
 	gun.create_portal(src)
+
+
+/obj/item/projectile/bullet/gyro/on_hit(atom/target, blocked = 0)
+	explosion(target, -1, 0, 2)
+	return 1
+
+
+/obj/item/projectile/bullet/frag12
+	name ="explosive slug"
+	damage = 25
+	weaken = 5
\ No newline at end of file
diff --git a/config/admins.txt b/config/admins.txt
index e888262a285..e484b955124 100644
--- a/config/admins.txt
+++ b/config/admins.txt
@@ -69,3 +69,4 @@ steelpoint = Game Master
 phil235 = Game Master
 xxnoob = Game Master
 tkdrg = Game Master
+thunder12345 = Game Master
diff --git a/html/changelogs/Thunder12345-grenade_slugs-6300.yml b/html/changelogs/Thunder12345-grenade_slugs-6300.yml
new file mode 100644
index 00000000000..b77f4ef1665
--- /dev/null
+++ b/html/changelogs/Thunder12345-grenade_slugs-6300.yml
@@ -0,0 +1,6 @@
+author: Thunder12345
+
+delete-after: True
+
+changes: 
+  - rscadd: "Added a new FRAG-12 explosive shotgun shell, built from the unloaded technological shell, using tablecrafting. Constructed using an unloaded technological tech shell, 5 units sulphuric acid, 5 units polytrinic acid, 5 units glycerol, and requires a screwdriver."
diff --git a/icons/obj/ammo.dmi b/icons/obj/ammo.dmi
index 200bed93b1b..367ef6ee234 100644
Binary files a/icons/obj/ammo.dmi and b/icons/obj/ammo.dmi differ