Hi Guys

I need a cheapish metal M4 Lower Receiver please. I got one a month odd back but it's too long, so I'd like to find another as close as possible to the size required.

As you can see from the pic I have provided it needs to be 184mm give or take 1mm starting from the beginning of the front receiver pin hole to the back part that is vertical just past the curve section, where the top of the lower would meet the cocking handle. The one I have now is about 5mm too long!!