I just picked up a SIG Carry Fastback. Similar to the Nightmare, in .45acp.
It is a terrific side arm. SIG quality. Fit and finish are first rate. Nice, tight slide to frame fit. Scary accuracy. Amazing. 100% reliable. I am impressed.
And, have to say, has more features for a lower price than a Colt.
Mine has:
Front strap checkering
Novak cut night sights
Nice, rosewood grips with the SIG logo (though I replaced mine with G10's)
Metal mainspring housing, checkered.
Fastback...bobtail
Steel frame and slide
Fewer MIM parts (from what I have read)
"Match" barrel and bushing
Extended thumb safety
It is scary accurate, about as accurate as my Springfield RO. And this is a Commander sized 1911 with a 4.2 inch barrel.
Btw....just a side note, I noticed the crown on my barrel seems very well done. Nicely cut and super clean. Nothing rough or off about it. Very pleased.
I will be putting in a new C&S sear spring. Trigger pull seems just a tad heavy, at just over 5 lbs.
Anyway, for just under $1000, I think SIG 1911's are fast becoming THE 1911 in this price range. All accounts I have read are very positive. Glad I got mine.