Just got my new Ruger in. It looks good. The trigger is nice. I hope it does not have the firing pin problems of the early 223. Here is a pic next to 308 ( that I have not worked up a load for!)
I had an idea of building a 300 BO or 458 socom off this gun but the magazine will only work for 223 dia cases. 22 nosler will not go in. Hope its accurate as a 223 and I will just shoot it as is. The 308 was rebarrled with a 1/10 Bartlin 5r before It was fired the first time.
The 223 magazine is intresting because its ACIS style. Leaves a lot of room for loading tipped bullets longer.
If this one gets rebarreled it will probably be to a 223 AI .