Pass I

code/modules/projectiles/guns/energy/laser.dm

@@ -6,7 +6,7 @@
 	fire_sound = 'sound/weapons/Laser.ogg'
 	charge_cost = 830
 	w_class = 3.0
-	m_amt = 2000
+	materials = list(MAT_METAL=2000)
 	origin_tech = "combat=3;magnets=2"
 	projectile_type = "/obj/item/projectile/beam"
 

code/modules/projectiles/guns/energy/special.dm

@@ -272,7 +272,7 @@ modules/mob/living/carbon/human/life.dm if you die, you will be zoomed out.
 	icon_state = "crossbow"
 	item_state = "crossbow"
 	w_class = 2
-	m_amt = 2000
+	materials = list(MAT_METAL=2000)
 	origin_tech = "combat=2;magnets=2;syndicate=5"
 	silenced = 1
 	projectile_type = "/obj/item/projectile/energy/bolt"
@@ -285,7 +285,7 @@ modules/mob/living/carbon/human/life.dm if you die, you will be zoomed out.
 	desc = "A reverse engineered weapon using syndicate technology."
 	icon_state = "crossbowlarge"
 	w_class = 3
-	m_amt = 4000
+	materials = list(MAT_METAL=4000)
 	origin_tech = "combat=2;magnets=2;syndicate=3" //can be further researched for more syndie tech
 	silenced = 0
 	projectile_type = "/obj/item/projectile/energy/bolt/large"
@@ -294,7 +294,7 @@ modules/mob/living/carbon/human/life.dm if you die, you will be zoomed out.
 	desc = "One and done!"
 	icon_state = "crossbowlarge"
 	origin_tech = null
-	m_amt = 0
+	materials = list()
 
 /obj/item/weapon/gun/energy/plasmacutter
 	name = "plasma cutter"

code/modules/projectiles/guns/energy/stun.dm

@@ -63,7 +63,7 @@
 	icon_state = "crossbow"
 	w_class = 2.0
 	item_state = "crossbow"
-	m_amt = 2000
+	materials = list(MAT_METAL=2000)
 	origin_tech = "combat=2;magnets=2;syndicate=5"
 	silenced = 1
 	fire_sound = 'sound/weapons/Genhit.ogg'
@@ -98,7 +98,7 @@
 	silenced = 0
 	w_class = 3.0
 	force = 10
-	m_amt = 4000
+	materials = list(MAT_METAL=4000)
 	projectile_type = "/obj/item/projectile/energy/bolt/large"
 
 

code/modules/projectiles/guns/projectile.dm

@@ -8,7 +8,7 @@
 	icon_state = "pistol"
 	origin_tech = "combat=2;materials=2"
 	w_class = 3.0
-	m_amt = 1000
+	materials = list(MAT_METAL=1000)
 //	recoil = 1
 	var/mag_type = "/obj/item/ammo_box/magazine/m10mm" //Removes the need for max_ammo and caliber info
 	var/obj/item/ammo_box/magazine/magazine