function ChangeBoneStuffThink()
    for k, v in pairs(player.GetAll()) do
        if v:GetActiveWeapon().Base != "weapon_ds_base" then
            if IsValid(v) && v:LookupBone("ValveBiped.Bip01_L_UpperArm") != nil then
				v:ManipulateBoneAngles( v:LookupBone("ValveBiped.Bip01_L_UpperArm"), Angle(0,0,0) )
            end
            if IsValid(v) && v:LookupBone("ValveBiped.Bip01_L_Forearm") != nil then
				v:ManipulateBoneAngles( v:LookupBone("ValveBiped.Bip01_L_Forearm"), Angle(0,0,0) )
            end
            if IsValid(v) && v:LookupBone("ValveBiped.Bip01_L_Hand") != nil then
				v:ManipulateBoneAngles( v:LookupBone("ValveBiped.Bip01_L_Hand"), Angle(0,0,0) )
            end
        end
    end
end
hook.Add("Think", "ChangeBoneStuffThink", ChangeBoneStuffThink)