They ought to be real bargains though I haven't handled one personally, the unique to Ruger way that the spring detent tube
is machined on instead of being staked eliminates a huge problem.
If you've ever had one shoot or work loose, the gun is on the
sick list until you can get to a smith for restaking.
Unless you have a specific tool for that purpose, Brownell's sells a variety of them
but unless you're a smith specializing in 1911s, probably not worth the money.
Loose 1911s have worked well for how many years now?
The Ruger looks like a solid piece, but I'm with neck, I like to wait a year or three. Not only do more kinks get worked out, but by that time there are more accessories available. Which isn't generally a problem with 1911s but it's a good rule of thumb for new platforms