Lower Receiver Components for AR 15

Build an exceptional AR-15 with high-quality lower parts kit from AT3 Tactical

Among the different AR-15 parts, the lower parts kit is the most important.

In AR-15, the lower receiver is considered the legal receiver or the legally controlled part. Hence, it’s the part that is serialized. 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 $50), 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

Build an exceptional AR-15 with high-quality lower parts kit from AT3 Tactical

Among the different AR-15 parts, the lower parts kit is the most important.

In AR-15, the lower receiver is considered the legal receiver or the legally controlled part. Hence, it’s the part that is serialized.

Browse through our list of standard AR-15 lower receiver such as buttstocks, receiver extension buffer tube parts, pistol grips, triggers, magazines, and other lower parts kit.

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