unfucks a few things post comments.

code/modules/projectiles/guns/misc/chem_gun.dm

@@ -19,7 +19,7 @@
 	var/last_synth = 0
 	var/obj/item/reagent_containers/glass/bottle/vial/vial
 	var/list/allowed_containers = list(/obj/item/reagent_containers/glass/bottle/vial/small, /obj/item/reagent_containers/glass/bottle/vial/large)
-	var/quickload = TRUE //
+	var/quickload = TRUE
 
 /obj/item/gun/chem/Initialize()
 	. = ..()
@@ -54,11 +54,34 @@
 /obj/item/gun/chem/attackby(obj/item/I, mob/living/user)
 	if((istype(I, /obj/item/reagent_containers/glass/bottle/vial)))
 		if(vial)
+			if(!quickload)
+				to_chat(user, "<span class='warning'>[src] can not hold more than one vial!</span>")
+				return FALSE
+			unload_hypo(vial, user)
+		else
+			var/obj/item/reagent_containers/glass/bottle/vial/V = I
+			if(!is_type_in_list(V, allowed_containers))
+				to_chat(user, "<span class='notice'>[src] doesn't accept this type of vial.</span>")
+				return FALSE
+			if(!user.transferItemToLoc(V,src))
+				return FALSE
+			vial = V
+			user.visible_message("<span class='notice'>[user] has loaded a vial into [src].</span>","<span class='notice'>You have loaded [vial] into [src].</span>")
+			update_icon()
+			playsound(loc, 'sound/weapons/autoguninsert.ogg', 35, 1)
+			return TRUE
+	else
+		to_chat(user, "<span class='notice'>This doesn't fit in [src].</span>")
+		return FALSE
+
+/*
+/obj/item/hypospray/mkii/attackby(obj/item/I, mob/living/user)
+	if((istype(I, /obj/item/reagent_containers/glass/bottle/vial) && vial != null))
 		if(!quickload)
 			to_chat(user, "<span class='warning'>[src] can not hold more than one vial!</span>")
 			return FALSE
 		unload_hypo(vial, user)
-	else
+	if((istype(I, /obj/item/reagent_containers/glass/bottle/vial)))
 		var/obj/item/reagent_containers/glass/bottle/vial/V = I
 		if(!is_type_in_list(V, allowed_containers))
 			to_chat(user, "<span class='notice'>[src] doesn't accept this type of vial.</span>")
@@ -73,17 +96,15 @@
 	else
 		to_chat(user, "<span class='notice'>This doesn't fit in [src].</span>")
 		return FALSE
+*/
 
 /obj/item/gun/chem/on_attack_hand(mob/user, act_intent = user.a_intent, unarmed_attack_flags)
 	. = ..() //Don't bother changing this or removing it from containers will break.
 
 /obj/item/gun/chem/attack_self(mob/living/user)
-	if(user && user.incapacitated())
-		if(user.incapacitated())
-			return
-		else if(!vial)
+	if(user && !user.incapacitated())
+		if(!vial)
 			to_chat(user, "This Hypo needs to be loaded first!")
-			return
 		else
 			unload_hypo(vial,user)