My new addition. Thanks everyone.
Nice score. You won't be disappointed. My CZ 527 American in 7.62x39 is the first sub MOA rifle I've ever owned. Or I guess I should say the CZ is the first rifle I've achieved sub MOA 5-shot groups. It's consistently, repeatably precise and accurate, bench rest or improvised rest, either way. I hear mostly good reports from people who have them in other calibers, including .223. Based on the good experience I've had with mine I don't doubt it.
There's a company that makes bolt handles for the 527 that allows the bolt handle to clear the objective bell of a scope.
Now if I could remember their name that would be great. I do know they're around $60.
Glades Armory. I bought the the RH bent shaft model with large ball knob. At just over an inch in diameter it's a big ball. Every time I look at it I get that AC/DC song stuck in my head. But the big balls works and the bolt handle dropped right in with very little fuss. They have other knob options you might like better, but I think their products are superior to the stock bolt handle. The people at Glades are nice folks who make quality product. I had a little correspondence back and forth with them as I was deciding what handle to purchase, and again when I was installing it. They responded in a timely manner and were very helpful.
https://gladesarmory.com/product-category/cz/cz-527-tactical-bolt-handle/cz-527-right-hand/
I also recommend Warne rings. I use the 1-inch Medium height fixed rings, Model 1B1M. Warne Mediums are the lowest height rings available for the CZ 527. Low is usually better for most applications. IMO the CZ brand rings and others are too high. I don't care for rails, but that's just me. I don't like the area over the port to be cluttered, which could complicate clearing jams should they occur. I doubt I'll ever have jams with the CZ, but I'm a cautious fellow. (I was an Eagle Scout... can't help it)
https://warnescopemounts.com/product/warne-1-inch-cz-pa-med-matte-rings/
I run a Burris Fullfield II 3-9x40. The objective bell is roughly 46 mm outside diameter. The Ocular bell is roughly 40 mm. With the Glades handle and the Warne mediums I have plenty of room to spare on both ends with no interference. I could move up to a bit higher power scope with larger objective bell and still use the Warnes.
The mags are a little pricey, but I bit the bullet and bought a couple. Clicking on the "Complete Your Purchase Button" is the hard part. (Glad that's over) So now I have 3 5-round mags. I can't imagine needing any more than that. The only thing I don't like about my CZ is I can't load it from the top due to the single stack mags.
A word of caution. Don't try to insert a round into the chamber from the top and slam the bolt home. You could mess up the bolt face and extractor and have to send it off for repair. Each round has to slide up from the mag.
There's a way to do it from the top that takes some practice. You insert the round into the chamber enough so that you can pull it back slightly into the mag. Then you can slide the bolt home. I've see a couple people that are pretty quick at it. I don't quite have the technique down yet. Maybe best just to use the mags.