I have a few problems.

[inland cape]

I'll start with what I think is the easiest when i pull out my guns, i dont hold them right they dont shoot and then my GUI isnt working and i have this error code
Argument 1 missing or nil - Client - CoreScript(Local):10

thats the script

[faint compass]

Forgot a T at Text

Use a plugin to fix the grip rotation

I dont think CurrentAmmoValue exists

[crimson tide]

** You are now Level 11! **

[faint compass]

Just take a look at your output tab and you can figure out where the problems are

@inland cape

[inland cape]

okay thank you

[faint compass]

CurrentAmmo . Value

[inland cape]

oh i miss placed the dot

[faint compass]

Yes

Check the output

Those errors will be warned

[inland cape]

i checked and nothing is being warned but it still dotn work

[faint compass]

That's weird Roblox isnt saying something's wrong when it clearly is

It should work, if not idk what could be wrong

Also, you are correctly trying by using 1, 2 and R?

I noticed you use Enum.KeyCode.One and Enum.KeyCode.Two which means 1 key and 2 key.

If you want to use MouseButton1 and MouseButton2, you have to do this:
if (Input.UserInputType == Enum.UserInputType.MouseButton1) then

[inland cape]

thats to reload and switch guns