All the relevant examine changes.

code/modules/projectiles/guns/alien.dm

@@ -31,9 +31,9 @@
 		last_regen = world.time
 		update_icon()
 
-/obj/item/weapon/gun/launcher/spikethrower/examine()
-	..()
-	usr << "It has [spikes] [spikes == 1 ? "spike" : "spikes"] remaining."
+/obj/item/weapon/gun/launcher/spikethrower/examine(mob/user)
+	..(user)
+	user << "It has [spikes] [spikes == 1 ? "spike" : "spikes"] remaining."
 
 /obj/item/weapon/gun/launcher/spikethrower/update_icon()
 	icon_state = "spikethrower[spikes]"

code/modules/projectiles/guns/projectile.dm

@@ -103,13 +103,13 @@
 
 
 
-/obj/item/weapon/gun/projectile/examine()
-	..()
-	usr << "Has [getAmmo()] round\s remaining."
+/obj/item/weapon/gun/projectile/examine(mob/user)
+	..(user)
+	user << "Has [getAmmo()] round\s remaining."
 //		if(in_chamber && !loaded.len)
-//			usr << "However, it has a chambered round."
+//			user << "However, it has a chambered round."
 //		if(in_chamber && loaded.len)
-//			usr << "It also has a chambered round." {R}
+//			user << "It also has a chambered round." {R}
 	return
 
 /obj/item/weapon/gun/projectile/proc/getAmmo()

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

@@ -197,14 +197,14 @@
 /obj/item/weapon/crossbowframe/update_icon()
 	icon_state = "crossbowframe[buildstate]"
 
-/obj/item/weapon/crossbowframe/examine()
-	..()
+/obj/item/weapon/crossbowframe/examine(mob/user)
+	..(user)
 	switch(buildstate)
-		if(1) usr << "It has a loose rod frame in place."
-		if(2) usr << "It has a steel backbone welded in place."
-		if(3) usr << "It has a steel backbone and a cell mount installed."
-		if(4) usr << "It has a steel backbone, plastic lath and a cell mount installed."
-		if(5) usr << "It has a steel cable loosely strung across the lath."
+		if(1) user << "It has a loose rod frame in place."
+		if(2) user << "It has a steel backbone welded in place."
+		if(3) user << "It has a steel backbone and a cell mount installed."
+		if(4) user << "It has a steel backbone, plastic lath and a cell mount installed."
+		if(5) user << "It has a steel cable loosely strung across the lath."
 
 /obj/item/weapon/crossbowframe/attackby(obj/item/W as obj, mob/user as mob)
 	if(istype(W,/obj/item/stack/rods))

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

@@ -98,15 +98,14 @@
 	in_chamber = contents[1]
 	return !isnull(in_chamber)
 
-/obj/item/weapon/gun/launcher/pneumatic/examine()
-	set src in view()
-	..()
-	if (!(usr in view(2)) && usr!=src.loc) return
-	usr << "The valve is dialed to [pressure_setting]%."
+/obj/item/weapon/gun/launcher/pneumatic/examine(mob/user)
+	if(!..(user, 2))
+		return
+	user << "The valve is dialed to [pressure_setting]%."
 	if(tank)
-		usr << "The tank dial reads [tank.air_contents.return_pressure()] kPa."
+		user << "The tank dial reads [tank.air_contents.return_pressure()] kPa."
 	else
-		usr << "Nothing is attached to the tank valve!"
+		user << "Nothing is attached to the tank valve!"
 
 /obj/item/weapon/gun/launcher/pneumatic/special_check(user)
 
@@ -147,14 +146,14 @@
 /obj/item/weapon/cannonframe/update_icon()
 	icon_state = "pneumatic[buildstate]"
 
-/obj/item/weapon/cannonframe/examine()
-	..()
+/obj/item/weapon/cannonframe/examine(mob/user)
+	..(user)
 	switch(buildstate)
-		if(1) usr << "It has a pipe segment installed."
-		if(2) usr << "It has a pipe segment welded in place."
-		if(3) usr << "It has an outer chassis installed."
-		if(4) usr << "It has an outer chassis welded in place."
-		if(5) usr << "It has a transfer valve installed."
+		if(1) user << "It has a pipe segment installed."
+		if(2) user << "It has a pipe segment welded in place."
+		if(3) user << "It has an outer chassis installed."
+		if(4) user << "It has an outer chassis welded in place."
+		if(5) user << "It has a transfer valve installed."
 
 /obj/item/weapon/cannonframe/attackby(obj/item/W as obj, mob/user as mob)
 	if(istype(W,/obj/item/pipe))

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

@@ -17,11 +17,10 @@
 	var/max_rockets = 1
 	var/list/rockets = new/list()
 
-/obj/item/weapon/gun/rocketlauncher/examine()
-	set src in view()
-	..()
-	if (!(usr in view(2)) && usr!=src.loc) return
-	usr << "\blue [rockets.len] / [max_rockets] rockets."
+/obj/item/weapon/gun/rocketlauncher/examine(mob/user)
+	if(!..(user, 2))
+		return
+	user << "\blue [rockets.len] / [max_rockets] rockets."
 
 /obj/item/weapon/gun/rocketlauncher/attackby(obj/item/I as obj, mob/user as mob)
 	if(istype(I, /obj/item/ammo_casing/rocket))