I bought a MagPul for my RA-P but my go to factory ammo and a couple of other brands of ammo would not feed reliably from the magazine. Plenty of other factory ammo would feed just not my favorites. So back to the OEM stock, not what I preferred, but the rifle shoots 1/2 MOA as issued. I'm not inclined to make a change and endure feeding issues in the bargain.
I will admit I never fired the rifle in the MagPul Hunter stock. It may have retained it's accuracy, but if I want to hunt with a single shot rifle, I'll take my Browning B-78.
I bought this Bell & Carlson a soon as I learned they were available. It uses the factory magazines, which I have no problem with. On a hunting rig I prefer the smooth lines of feel of the rifle with the flush fit magazines. Still a 1/2 MOA rifle, now with much sturdier furniture, and it feeds all ammo with no issues.
I just re-read your original posting and see you want to use AICS style mags, ok then. If you change your mind I highly recommend the B&C.