One of the nicest accessories for the 22/45 (or any Ruger .22 auto) is the titanium bolt racker. After you’ve been pinched about 30 times, it becomes a necessity.
NOTE: The thing’s supposed to stay in place with the set screws. It doesn’t. I marked the rear of the bolt and ground a couple of dimples for the screws to index in. 10,000+ rounds later, it’s still right there.