Adds in all the stuff from the last one

code/modules/projectiles/ammunition/magazines.dm

@@ -119,6 +119,9 @@
 	ammo_type = /obj/item/ammo_casing/shotgun/rubbershot
 	max_ammo = 6
 
+/obj/item/ammo_box/magazine/internal/shot/riot/short
+	max_ammo = 3
+
 /obj/item/ammo_box/magazine/internal/grenadelauncher
 	name = "grenade launcher internal magazine"
 	ammo_type = /obj/item/ammo_casing/a40mm

code/modules/projectiles/guns/projectile/shotgun.dm

@@ -80,16 +80,85 @@
 	desc = "A sturdy shotgun with a longer magazine and a fixed tactical stock designed for non-lethal riot control."
 	icon_state = "riotshotgun"
 	mag_type = /obj/item/ammo_box/magazine/internal/shot/riot
-	sawn_desc = "Come with me if you want to live."
+	var/style = 1
 
 /obj/item/gun/projectile/shotgun/riot/attackby(obj/item/A, mob/user, params)
 	..()
 	if(istype(A, /obj/item/circular_saw) || istype(A, /obj/item/gun/energy/plasmacutter))
-		sawoff(user)
+		sawoff(A, user, 0)
 	if(istype(A, /obj/item/melee/energy))
 		var/obj/item/melee/energy/W = A
 		if(W.active)
-			sawoff(user)
+			sawoff(A, user, 0)
+	if(istype(A, /obj/item/pipe))
+		sawoff(A, user, 1)
+
+/obj/item/gun/projectile/shotgun/riot/sawoff(obj/item/A, mob/user, style = 0)
+	//Check to see if they match
+	if(sawn_state == SAWN_OFF & style == 0)
+		to_chat(user, "<span class='warning'>\The [src] is already shortened!</span>")
+		return
+	if(sawn_state != SAWN_OFF & style == 1)
+		to_chat(user, "<span class='notice'>[src] already has a full barrel and magazine!</span>")
+		return
+	//Make sure it isn't in a bag
+	if(istype(loc, /obj/item/storage))
+		to_chat(user, "<span class='info'>How do you plan to modify [src] while it's in a bag.</span>")
+		return
+	//if there's any live ammo inside the gun, makes it go off
+	if(chambered)
+		afterattack(user, user)
+		user.visible_message("<span class='danger'>\The [src] goes off!</span>", "<span class='danger'>\The [src] goes off in your face!</span>")
+		return
+	//Spill the mag onto the floor
+	if(magazine.ammo_count())
+		user.visible_message("<span class='danger'>[user.name] opens [src] up and the shells go goes flying around!</span>", "<span class='userdanger'>You open [src] up and the shells go goes flying everywhere!!</span>")
+		while(get_ammo() > 0)
+			var/obj/item/ammo_casing/CB
+			CB = magazine.get_round(0)
+			if(CB)
+				CB.loc = get_turf(loc)
+				CB.update_icon()
+	if(style == 0)
+		if(do_after(user, 10, target = src))
+			to_chat(user, "<span class='notice'>You saw the barrel and magazine of the [src].</span>")
+			w_class = WEIGHT_CLASS_NORMAL
+			slot_flags = null
+			magazine.max_ammo = 3
+			name = "assault shotgun"
+			current_skin = "riotshotgun-short"
+			desc = "A shortened riot shotgun that has been shortened enough to fit inside a bag."
+			sawn_state = SAWN_OFF
+			update_icon()
+	else
+		if(do_after(user, 10, target = src))
+			to_chat(user, "<span class='notice'>You install the longer barrel and magazine onto [src].</span>")
+			w_class = WEIGHT_CLASS_BULKY
+			slot_flags = SLOT_BACK
+			magazine.max_ammo = 6
+			name = "riot shotgun"
+			current_skin = "riotshotgun"
+			desc = "A sturdy shotgun with a longer magazine and a fixed tactical stock designed for non-lethal riot control."
+			sawn_state = null
+			update_icon()
+			qdel(A)
+	return
+
+/obj/item/gun/projectile/shotgun/riot/update_icon() //Can't use the old proc as it makes it go to riotshotgun-short_sawn
+	..()
+	if(current_skin)
+		icon_state = "[current_skin]"
+	else
+		icon_state = "[initial(icon_state)]"
+
+/obj/item/gun/projectile/shotgun/riot/short
+	name = "assault shotgun"
+	desc = "A shortened riot shotgun that has been shortened enough to fit inside a bag."
+	icon_state = "riotshotgun-short"
+	mag_type = /obj/item/ammo_box/magazine/internal/shot/riot/short
+	w_class = WEIGHT_CLASS_NORMAL
+	slot_flags = null
+	sawn_state = SAWN_OFF
 
 ///////////////////////
 // BOLT ACTION RIFLE //