At Moriarti Armaments, you can choose from a variety of 9mm AR upper options, including complete upper receivers or customizable kits, so you can build your rifle exactly the way you want it. At Moriarti Armaments, you can choose from a variety of 9mm AR upper options, including complete upper receivers or customizable kits, so you can build your rifle exactly the way you want it. At Moriarti Armaments, you can choose from a variety of 9mm AR upper options, including complete upper receivers or customizable kits, so you can build your rifle exactly the way you want it. At Moriarti Armaments,

Cost is also an important factor when choosing ammunition. 9mm ammo is generally more affordable than many other types. By opting for a 9mm AR upper, you can save money on ammo, allowing for more practice without spending a lot. This makes the 9mm AR upper a practical choice for regular shooters. Cost is also an important factor when choosing ammunition. 9mm ammo is generally more affordable than many other types. By opting for a 9mm AR upper, you can save money on ammo, allowing for more practice without spending a lot. This makes the 9mm AR upper a practical choice for regular shooters. Cos