Yes, that has been my experience and remember just be mindful of 922r compliance and your local and state laws, if you intend to use mags with capacities over 10 rounds. You usually dont have to mess with the mag catch on the 5.45 rifles like you do on the 7.62 and .223 versions to get the mag to fit. The 5.45 mags should pop right in. Like I said earlier mine feed all but the last round fine, so I needed the bullet guide for 100% reliable feeding.
If he doesn't take off the monte carlo stock, or puts on a dragunov style stock with the grip integrated he doesn't have to worry about