Raycast sometimes nil

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1

Client Code:

local FireDebounce = false
Tool.Activated:Connect(function()
	if FireDebounce == false then
		if (CurrentArms:FindFirstChild("Sheriff"):WaitForChild("Barrel").Position - Mouse.Hit.Position).magnitude < 999 then
			local Raycastparams = RaycastParams.new()
			Raycastparams.FilterType = Enum.RaycastFilterType.Blacklist
			Raycastparams.FilterDescendantsInstances = {Player.Character,workspace.Rays}
			local Result = workspace:Raycast(CurrentArms:FindFirstChild("Sheriff"):WaitForChild("Barrel").CFrame.p,Mouse.Hit.p-CurrentArms:FindFirstChild("Sheriff"):WaitForChild("Barrel").CFrame.p,Raycastparams)
			print(Result)
			if Result ~= nil then
				RemoveAnims()
				FireDebounce = true
				if CurrentArms ~= nil then
					CurrentArms:FindFirstChild("Sheriff").Barrel.MuzzleEffect.Enabled = true
				end
				if Result.Instance ~= nil then
					if Result.Instance.Parent:FindFirstChild("Zombie") then
						SituationEvent:FireServer("Clicked",Result.Distance,CurrentArms.Sheriff.Barrel.Position,Mouse.Hit.Position,Result.Instance.Parent,"NPC",Result.Instance)
					elseif Result.Instance.Parent:FindFirstChild("Humanoid") then
						SituationEvent:FireServer("Clicked",Result.Distance,CurrentArms.Sheriff.Barrel.Position,Mouse.Hit.Position,Result.Instance.Parent,"Player",Result.Instance)
					else
						SituationEvent:FireServer("Clicked",Result.Distance,CurrentArms.Sheriff.Barrel.Position,Mouse.Hit.Position,nil,nil)
					end
				end
				_G.Camera("Offset")
				wait(.45)
				if CurrentArms ~= nil then
					CurrentArms:FindFirstChild("Sheriff").Barrel.MuzzleEffect.Enabled = false
				end
				FireDebounce = false
			end
		end
	end
end)

Sometimes print nil, sometimes working perfectly

Problem line:
local Result = workspace:Raycast(CurrentArms:FindFirstChild("Sheriff"):WaitForChild("Barrel").CFrame.p,Mouse.Hit.p-CurrentArms:FindFirstChild("Sheriff"):WaitForChild("Barrel").CFrame.p,Raycastparams)

2

What exactly is the problem? It is intended functionality for a call to Raycast to return nil if it did not collide with anything. Are you getting nil results when you expect there to always be a collision?

3

Yes there is parts where i click.