I used to have a transferable sear in an FNC, and yes it is in the less expensive range for transferable 5.56mm machine guns. However, it's a poor choice because spare parts are rare, and because you're stuck with 5.56mm. You may pay a couple thousand more for an M16, but the plethora of available parts and the fact that you can change an M16 to any number of other calibers means that it's a much better choice for most people. Not coincidentally, after owning a number of other machine guns over almost 2 decades, the only one I've retained is an M16.
But if you want the gun from Heat because you want the gun from Heat, then I guess only the gun from Heat will do.
I would not worry about being locked into the 5.56mm. I would worry about the lack of spare parts to the point that it would be a deal killer. Are the spare parts that hard to buy? I would think that you would want a bunch of extractors, firing pins, springs, at least 2 spare bolts.
If you are going for an actual select fire transferable Colt select fire you will likely be paying twice as much as the listed price for that selectfire FNC.
I belong to the only real NFA friendly gun club in the greater Birmingham area and a friend there has one of these FNC sear guns. There was some strange case where a bunch of pre-86 sears were being held up by some ATF red tape and they all got loose at once in the late 90's or around the turn of the century. Everybody who bought one (including my friend from the club) had to find a semi-auto host FNC gun to covert of course. He was really proud of the fact that he had gotten into the gun and sear for around $5K at the time.
I have fired his many times, it runs perfectly, is a blast to shoot, and will hold its own with any similarly configured NFA AR.
However the big catch on full auto rifle cartridge NFA guns is at some point, if you are having fun with the dang thing, you are going to have to rebarrel it. Simple as that, you are either going to really get picky about heating it up or you are going to concede that sooner or later you burn up and wear out a barrel.
That is not the easy thing with this rifle like it is with the full auto AR/M16 platforms. My friend sold his FNC and the sear pack at a good profit (transferable pre-86 NFA items only increase in price, forever...) for that reason, he did not know where his next barrel was coming from. With an AR platform you can buy cheap barrels and stack them deep and burn them up at will. With the HK autosear tribe you can keep buying PTR, Century rifles in .223 or .308 or even 7.62x39, install your sear pack, and burn them up and simply scrap them when you are done. There is no such solution for the FNC.
I suppose there are people who consider the full auto NFA guns as "weapons" but I and most of the people I shoot the NFA stuff with consider them more amusement park rides or range toys, and having one you are afraid to go out and have fun with is a giant waste of money in my view.
Last edited by fatdog; 09-19-2020 at 01:32 AM.