diff --git a/code/modules/projectiles/guns/energy/stun.dm b/code/modules/projectiles/guns/energy/stun.dm
index b41c1b090ba..41e8c9a53db 100644
--- a/code/modules/projectiles/guns/energy/stun.dm
+++ b/code/modules/projectiles/guns/energy/stun.dm
@@ -55,3 +55,14 @@
 	force = 10
 	matter = list(DEFAULT_WALL_MATERIAL = 200000)
 	projectile_type = /obj/item/projectile/energy/bolt/large
+
+/obj/item/weapon/gun/energy/plasmastun
+	name = "plasma pulse projector"
+	desc = "The Mars Military Industries MA21 Selkie is a weapon that uses a laser pulse to ionise the local atmosphere, creating a disorienting pulse of plasma and deafening shockwave as the wave expands."
+	icon_state = "plasma_stun"
+	item_state = "plasma_stun"
+	fire_sound = 'sound/weapons/blaster.ogg'
+	origin_tech = list(TECH_COMBAT = 2, TECH_MATERIAL = 2, TECH_POWER = 3)
+	fire_delay = 20
+	charge_cost = 600
+	projectile_type = /obj/item/projectile/energy/plasmastun
\ No newline at end of file
diff --git a/code/modules/projectiles/projectile.dm b/code/modules/projectiles/projectile.dm
index 484c1e01636..750164a2602 100644
--- a/code/modules/projectiles/projectile.dm
+++ b/code/modules/projectiles/projectile.dm
@@ -65,6 +65,8 @@
 	var/tracer_type
 	var/impact_type
 
+	var/vacuum_traversal = 1 //Determines if the projectile can exist in vacuum, if false, the projectile will be deleted if it enters vacuum.
+
 	var/datum/plot_vector/trajectory	// used to plot the path of the projectile
 	var/datum/vector_loc/location		// current location of the projectile in pixel space
 	var/matrix/effect_transform			// matrix to rotate and scale projectile effects - putting it here so it doesn't
@@ -300,6 +302,10 @@
 			qdel(src)	// if it's left the world... kill it
 			return
 
+		if (is_below_sound_pressure(get_turf(src)) && !vacuum_traversal) //Deletes projectiles that aren't supposed to bein vacuum if they leave pressurised areas
+			qdel(src)
+			return
+
 		before_move()
 		Move(location.return_turf())
 
diff --git a/code/modules/projectiles/projectile/energy.dm b/code/modules/projectiles/projectile/energy.dm
index 0d9d4ef5fa6..c45ea1917b6 100644
--- a/code/modules/projectiles/projectile/energy.dm
+++ b/code/modules/projectiles/projectile/energy.dm
@@ -133,3 +133,42 @@
 	light_range = 2
 	light_power = 0.5
 	light_color = "#33CC00"
+
+/obj/item/projectile/energy/plasmastun
+	name = "plasma pulse"
+	icon_state = "plasma_stun"
+	armor_penetration = 10
+	kill_count = 4
+	damage = 5
+	agony = 70
+	damage_type = BURN
+	vacuum_traversal = 0	//Projectile disappears in empty space
+
+/obj/item/projectile/energy/plasmastun/proc/bang(var/mob/living/carbon/M)
+
+	to_chat(M, "<span class='danger'>You hear a loud roar.</span>")
+	playsound(M.loc, 'sound/effects/bang.ogg', 50, 1)
+	var/ear_safety = 0
+	ear_safety = M.get_ear_protection()
+	if(ear_safety == 1)
+		M.Weaken(2)
+	else if (ear_safety > 1)
+		M.Weaken(1)
+	else if (!ear_safety)
+		M.Stun(10)
+		M.Weaken(3)
+		M.ear_damage += rand(1, 10)
+		M.ear_deaf = max(M.ear_deaf,15)
+	if (M.ear_damage >= 15)
+		to_chat(M, "<span class='danger'>Your ears start to ring badly!</span>")
+		if (prob(M.ear_damage - 5))
+			to_chat(M, "<span class='danger'>You can't hear anything!</span>")
+			M.sdisabilities |= DEAF
+	else
+		if (M.ear_damage >= 5)
+			to_chat(M, "<span class='danger'>Your ears start to ring!</span>")
+	M.update_icons()
+
+/obj/item/projectile/energy/plasmastun/on_hit(var/atom/target)
+	bang(target)
+	. = ..()
\ No newline at end of file
diff --git a/icons/obj/gun.dmi b/icons/obj/gun.dmi
index 996ab9699d0..6bf741b8afd 100644
Binary files a/icons/obj/gun.dmi and b/icons/obj/gun.dmi differ
diff --git a/icons/obj/projectiles.dmi b/icons/obj/projectiles.dmi
index 2e254cc5cb2..522d540bdbd 100644
Binary files a/icons/obj/projectiles.dmi and b/icons/obj/projectiles.dmi differ