Exactly what i was looking for - Brenton USA Long-Load AR-15 6.5 Grendel 14 Rounds Rifle Magazine

Great product for hunters you get a 15 round magazine for the range then when hunting all you have to do is install the 5 round stopper which is already pre-installed so you have to uninstall it when you first get it it confuse me the first time very easy to uninstall from the slide plate it’s perfectly in my AR-15 and runs great