Complete AR Parts, Parts for Glock®, and Reloading Supplies
Welcome to Arm or Ally — your trusted source for premium firearm components, precision upgrades, and the parts that make every build your own. Whether you’re perfecting an AR-15 rifle, assembling an AR-10 or AR-9 platform, upgrading a Glock® handgun, or fine-tuning your reloading setup, Arm or Ally provides quality parts and expert support to help you build, customize, and shoot with confidence.
AR Parts and Accessories for Every Build
From first-time builders to seasoned gunsmiths, Arm or Ally carries everything you need for the perfect AR. Our complete line of AR parts and accessories covers every component — upper receivers, lowers, barrels, handguards, bolt carrier groups (BCGs), and triggers. We also stock essential accessories like buffer kits, stocks, grips, and muzzle devices. Trusted brands such as Aero Precision, Magpul, and Rise Armament ensure every part meets the highest standards for fit and function.
AR-10: Power and Precision at Long Range
The AR-10 platform offers unmatched long-range accuracy and power. Build yours with upper receivers, lowers, match-grade barrels, and bolt carrier groups engineered for precision. Whether you’re assembling a .308 hunting rifle, a 6.5 Creedmoor competition setup, or a tactical build, Arm or Ally has the parts to complete your AR-10 with confidence and consistency.
AR-9: Compact and Reliable Pistol-Caliber Power
For builders who prefer compact platforms, our AR-9 parts deliver performance and versatility in every shot. Explore uppers, lowers, barrels, and bolt carrier groups designed for pistol-caliber carbine builds. Whether you’re creating a 9mm PCC for competition or a compact defensive setup, we provide the precision components and compatibility details you need to get it right.
Performance Parts for Glock® Pistols
Our collection of parts for Glock® pistols includes slides for Glock®, threaded barrels for Glock®, triggers for Glock®, and upgraded internals that enhance performance and reliability. Customize your Glock® 17, Glock® 19, or Glock® 43 for better control, smoother shooting, and improved accuracy. Each part is selected to meet competitive and tactical standards — from drop-in barrels to precision-machined slides.
Optics, Lights, and Target Acquisition
Visibility and target acquisition are critical. Our optics and lighting collection features red dots, holographic sights, and tactical weapon lights designed for AR rifles and Glock® pistols. Choose proven performers like Holosun and Olight to illuminate your field of view and stay on target. Whether for competition, defense, or range use, our optics and illumination gear help you perform at your best in any environment.
Reloading Supplies and Brass for Precision Shooters
Reloading gives shooters full control over performance and precision. Our reloading supplies include presses, dies, scales, powder, primers, and once-fired brass in popular calibers like .223, 6.5 Creedmoor, and .308. Trusted brands like Hornady, Nosler, and Norma deliver reliability for both precision reloaders and high-volume shooters. Whether crafting custom competition rounds or training ammo, we have the components to get the job done.
Complete Builder’s Sets and AR Kits
Our AR builder’s sets make custom builds easy and consistent. Each kit includes matched uppers, lowers, and barrels, designed for precision alignment and durability. Whether you’re assembling an AR-15, AR-10, or AR-9, you’ll find complete upper receiver kits and builder sets ready for your next project — no guesswork required. Arm or Ally ensures every component fits and functions as intended.
Expert Support, Guides, and Customer Service
Questions about compatibility or choosing the right parts? Explore our Tactical Intelligence hub for build guides, how-tos, and detailed product insights. Or contact our Customer Support team for personalized assistance. Whether you’re tuning an existing setup or starting from scratch, we’re here to help make your next firearm build a success.
Arm or Ally — Build it right. Shoot it better. Ready when you AR.
