AR-15 Upper Receiver Parts

Best AR-15 Upper Receivers

AT3 Tactical provides the best AR-15 upper receivers – all in stock and ready to ship. Customize your AR-15 with ease with our wide-range of upper receivers including handguards & quad rails, gas blocks & tubes, bolt carrier groups, charging handles, upper receivers & parts, barrels, front grips, and muzzle devices. READ MORE

Thanks to AT3 great processing and delivery this is my first build I love the feel and look of these greatly satisfied with them install was super easy and function for griping and maneuvering the mag with this add-on is completely easy and my experience is definitely bringing me back for more parts and accessories

~ William Collins

Fast, free shipping (over $99), hand guard is awesome, easy to install, fits and looks great! AT3 tactical will, from now on, be the 1st website I check for gun items!

~ jerry adams

Great upgrade over the standard one that came on my 5yo Daniels Defense rifle. I like the asymmetric design to give more reach over the forward assist. It has enough stickout to be an easy pull even around the backup Magpull flip ups.

~ Benjamin Brown

Needed a extended charging handle to clear my 1-6x and offset Rmr and this fit the bill, feels solid and works great, can't see spending $40-80+ for Gucci handles when mil specs been working for the life of most guns

~ Daren

Lower Receiver Components for AR 15

AR-15 Upper Receiver Components

AR-15 Sights, Optics, Lights, & Lasers

Other AR-15 Parts & Accessories

Firearms

Best AR-15 Upper Receivers

AT3 Tactical provides the best AR-15 upper receivers – all in stock and ready to ship. Customize your AR-15 with ease with our wide-range of upper receivers including handguards & quad rails, gas blocks & tubes, bolt carrier groups, charging handles, upper receivers & parts, barrels, front grips, and muzzle devices.

Shop from our AT3 brand and those from top brands such as Ballistic Advantage, Aero Precision, Magpul, and more!

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