When I bought mine the AR mag version wasn't available or I would have bought that for sure.
I can only say that in hindsight..as I should have researched a bit more on the RAR...who would have thought that a simple flush box mag would have been such a problem. 4 Rounds perfect for hunting for him, but not feeding reliably is not good. Otherwise the rifle is amazing. With my Barnes 110 reloads it's 1/2" groups at 100.
I bit the bullet and ordered a Lucky 13 mag. Based on how it comes apart, I'm kind of hoping I'll be able to remove the bottom half and use the follower and spring in the top half and see if I can use just the top half to hold 3-4 rounds. It won't stick out as much and as long as it feeds reliably...that will be my solution.