Find AR9 rifles and pistols for sale at Gunprime. AR9s are AR styled firearms, rifle or pistol, chambered in 9mm Luger. Those familiar with the AR-15 platform will feel right at home with the AR9. One benefit of an AR9 over your standard AR-15 chambered in 5.56/223 is a typically smaller profile - easier to keep handy as a truck gun than an AR-15. Of course, you are sacrificing significant ballistic performance compared to rifle calibers, but modern 9mm defensive loads such as your HST, Critical Duty and Gold Dot are perfectly viable and proven threat stoppers. Check out our full selection of AR9s, including our all new 10 inch FX9, and add one to your collection today! Looking for ammo as well? Check out our selection of ammunition for your new AR9 here.