Need help with an error

[CR7]

Thsi is the error.
[url]http://pastebin.com/DaBBc42r[/url]

[ERROR] gamemodes/darkrp/entities/weapons/bobs_gun_base/shared.lua:356: attempt to index a nil value
  1. ShootBullet - gamemodes/darkrp/entities/weapons/bobs_gun_base/shared.lua:356
   2. ShootBulletInformation - gamemodes/darkrp/entities/weapons/bobs_gun_base/shared.lua:287
    3. unknown - gamemodes/darkrp/entities/weapons/bobs_gun_base/shared.lua:208

This is where the error is located. Lines 350-400
[url]http://pastebin.com/xn71Sp40[/url]

if CLIENT and !game.SinglePlayer() and !self.Owner:IsNPC() then
                local anglo = Angle(math.Rand(-self.Primary.KickDown,-self.Primary.KickUp), math.Rand(-self.Primary.KickHorizontal,self.Primary.KickHorizontal), 0)
 
                local eyes = self.Owner:EyeAngles()
                eyes.pitch = eyes.pitch + (anglo.pitch/3)
                eyes.yaw = eyes.yaw + (anglo.yaw/3)
                if GetConVar("M9KDynamicRecoil"):GetBool() then
                        self.Owner:SetEyeAngles(eyes)
                end
        end
 
end
 
/*---------------------------------------------------------
   Name: SWEP:RicochetCallback()
---------------------------------------------------------*/
 
function SWEP:RicochetCallback(bouncenum, attacker, tr, dmginfo)
       
        if not IsFirstTimePredicted() then
        return {damage = false, effects = false}
        end
       
        local PenetrationChecker = false
       
        if GetConVar("M9KDisablePenetration") == nil then
                PenetrationChecker = false
        else
                PenetrationChecker = GetConVar("M9KDisablePenetration"):GetBool()
        end
       
        if PenetrationChecker then return {damage = true, effects = DoDefaultEffect} end
 
        bulletmiss = {}
                bulletmiss[1]=Sound("weapons/fx/nearmiss/bulletLtoR03.wav")
                bulletmiss[2]=Sound("weapons/fx/nearmiss/bulletLtoR04.wav")
                bulletmiss[3]=Sound("weapons/fx/nearmiss/bulletLtoR06.wav")
                bulletmiss[4]=Sound("weapons/fx/nearmiss/bulletLtoR07.wav")
                bulletmiss[5]=Sound("weapons/fx/nearmiss/bulletLtoR09.wav")
                bulletmiss[6]=Sound("weapons/fx/nearmiss/bulletLtoR10.wav")
                bulletmiss[7]=Sound("weapons/fx/nearmiss/bulletLtoR13.wav")
                bulletmiss[8]=Sound("weapons/fx/nearmiss/bulletLtoR14.wav")
               
        local DoDefaultEffect = true
        if (tr.HitSky) then return end
       
        // -- Can we go through whatever we hit?
        if (self.Penetration) and (self:BulletPenetrate(bouncenum, attacker, tr, dmginfo)) then
                return {damage = true, effects = DoDefaultEffect}
        end