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Shop online for great deals on AR 15 Parts and accessories from leading brands like Magpul, Aero Precision, Geissele, and more. Our wide selection of AR parts includes complete uppers and upper parts, such as charging handles, bolt carrier groups, and gas blocks. We also carry several AR 15 lower receiver parts like safety selector switches, AR 15 triggers, bolt catches, and much more. Whether you’re a competitive shooter, hunter, or law enforcement, we have high-quality components to help you upgrade your firearm or build one from the bottom up. OpticsPlanet supports the legal sale, use, and customization of the AR15 rifle.![]()
Yes, as long as your state and local laws permit, you can purchase AR parts online at OpticsPlanet.com. The only component you cannot legally buy online is a lower receiver, which must be purchased from a licensed FFL dealer.
Most AR parts are interchangeable, especially if they are both labeled as Mil-Spec. The wealth of customization options is one of the reasons AR 15s are so popular. For AR 15 barrels, you need to ensure the caliber of the barrel matches the caliber of your other parts.
All parts of an AR are equally essential to the function of the firearm. Some examples of important AR 15 Parts include:
AR 15 Barrels & Muzzle Devices
AR 15 Triggers & Trigger Guard
AR 15 Gas Blocks & Tubes
Dust Cover
Forward Assist
While AR parts are durable, they do experience a lot of wear and tear if you shoot regularly. This can result in some malfunctions and issues with the more sensitive and most used parts, so knowing what to look out for can help you prepare by getting some backup AR parts in case you need them. Generally, the components that wear out first are the extractor, ejector, and gas rings. The extractor and ejector are responsible for removing spent cartridges from the chamber and ejecting them from the firearm, which involves a lot of friction and heat. The gas rings work with the gas block to direct the gases from a fired round into the gas tube, which is extremely hot, causing the rings to wear down faster.
Browse our selection of gun parts to save big on M-LOK handguards, AR 15 stocks, build kits, and tons of other premium gun gear for your rifle. Shop for Aero Precision AR15 Parts, Geissele AR15 Parts, and other high-quality AR 15 parts from top brands in the industry. Also, check out our AR 15 Parts How-to Guides for more information on how to select a folding stock adapter, AR trigger, and other essential AR parts. Upgrade your build today and get Free Shipping on most orders over $49.
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