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AR-15/AR-10/AR9

This hub covers Combat Armory's full AR-platform lineup across the AR-15, AR-9 and AR-10, more than 70 products spanning $1 small parts to $279.99 complete upper kits. Subcategories include Barrel (16), Triggers (9), Upper Assembly Kits (8), Upper Receiver (6), Butt Stock Kit (5), Gas Tubes (5), Handguards & Rails (4), Lower Parts Kit (3), Buffers (2) and Bolt Carrier Groups (2), plus single-item categories for pins, detents and the forward assist.

Whether you are building a complete upper, replacing a worn pin or spring, or upgrading to an active reset trigger, parts are organized by function so you can shop a specific subcategory or browse the full range. Popular picks include the Combat Armory Barrel 16" 4150 M4 Contour Barrel 5.56 NATO Carbine Length and the AR-15 .556 upper kits with a slim M-Lok handguard.

For a complete lower receiver or full rifle build, see the Firearms/Lowers category, which requires FFL transfer under federal law. Parts in this hub, from barrels to handguards, generally ship directly to your address without any transfer paperwork required at all.

B.C.G (2) Barrel (16) Bolt Catch Plunger (1) Buffer Retaining Pin (1) Buffers (2) Butt Stock Kit (5) Charging Handles (1) Dust Cover (1) Flash Hider / Muzzle Break (2) Forward Assist (1) Gas Block (1) Gas Tubes (5) Hammer / Trigger Pin (1) Handguards & Rails (4) Lower Parts Kit (3) Magazine (1) Selector Detent (1) Triggers (9) Takedown / Pivot Pin Detent (1) Upper Assembly kits (8) Upper Receiver (6)
AR-15 Upper Receivers & Kits AR-15 Trigger Parts Forced Reset Triggers
70 products

AR-15/AR-10/AR9 questions

What AR platforms are covered here?

This hub spans the AR-15, AR-9 and AR-10 platforms, including barrels, uppers, triggers, handguards, buffers, gas tubes and small repair parts built specifically for each of these three platforms.

Where do I find a complete lower receiver?

Serialized lower receivers and complete rifles are listed separately under the Firearms/Lowers category and require FFL transfer, since those items are firearms or firearm frames under federal law.

How fast does an AR-15 parts order ship?

In-stock parts ship within 24 hours of purchase, with free shipping available on orders that total over $99 shipped within the continental United States.

Can I return AR-15 parts if they don't fit my build?

Unused, uninstalled parts can be returned within 30 days of delivery under the standard return policy. Installed or fired parts are not eligible for return once used.