nice rock island. i have one myself with a skeletonized hammer, a small mag well, and a nice pair of wood grips with deep checkering. How does urs shoot, mine is decent but not as accurate as my S&W m&p 9mm.
i've owned one RIA tac .45acp full size. i really liked it, i did my first trigger job, or what i thought was, i just stone polished a few parts, the break was a lot cleaner. unfortunately i sold it when i was downsizing and getting rid of anything that wasnt 9mm. but i had a 2inch group at 7 yards 15rnds.