AR-15 Lower Receivers
The AR-15 lower receiver is a key portion of your build. It’s the one part of the AR-15 that is serialized and considered a “firearm”, and its sale is regulated by the ATF. AT3 strives to make the process as simple as possible to help you shop for the lower you want, with prompt shipment to your FFL of choice. Just make sure to brush up on your local regulations before making an order!
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Price
Brand
- Lower Receivers - Aero Precision (15)
- Lower Receivers - KE Arms (13)
- AR-15 Lower Receivers - AT3 Tactical (6)
- AR-15 Lower Receivers - Angstadt Arms (4)
- Lower Receivers - Anderson Manufacturing (4)
- AR-15 Lower Receivers - Ballistic Advantage (3)
- AR-15 Lower Recievers - UTG (2)
- AR-15 Lower Receivers - Desert Tech (2)
- Lower Receivers - Unbranded AR (1)
- Lower Receivers - FMK Firearms (1)
- Lower Receivers - DPMS (1)
- AR-15 Lower Receivers - CMMG Inc (1)
- AR-15 Lower Receivers - Battle Arms Development (1)
- AR-15 Lower Receivers - Alex Pro Firearms (1)
- AR-15 Lower Receivers - American Defense Mfg (1)
Caliber
- Lower Receivers - .223/5.56 (23)
- Lower Receivers - 9mm (13)
- Lower Receivers - .300 Blackout (12)
- Lower Receivers - .40 S&W (4)
- AR-10 Lower Receivers (3)
- AR-15 Lower Receivers - 224 Valkyrie (2)
- AR-15 Lower Receivers - 22 LR (2)
- AR-15 Lower Receivers - 350 Legend (2)
- AR-15 Lower Receivers - 450 Bushmaster (2)
- AR-15 Lower Receivers - 458 Socom (2)
- AR-15 Lower Receivers - 6.5 Grendel (2)
- AR-15 Lower Receivers - 6.8 SPC (2)
- AR-15 Lower Receivers - 6mm ARC (2)
- AR-15 Lower Receivers - 7.62x39 (2)
- AR-15 Lower Receivers - .45 ACP (2)
- AR-10 Lower Receivers - 6.5 Creedmoor (1)
Color
- Lower Receivers - Black (29)
- Lower Receivers - OD Green (12)
- Lower Receivers - Flat Dark Earth (11)
- AR-15 Lower Receivers - Burnt Bronze (6)
- AR-15 Lower Receivers - Pink (4)
- AR-15 Lower Receivers - Red (4)
- AR-15 Lower Receivers - Titanium (4)
- AR-15 Lower Receivers - Tungsten (4)
- AR-15 Lower Receivers - Gray (3)
- AR-15 Lower Receivers - Purple (2)
- AR-15 Lower Receivers - Gold (2)
- AR-15 Lower Receivers - Silver (2)
- AR-15 Lower Receivers - Brown (2)
List
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AT3™NEW
AT3™ AT-15 M-LOK Receiver Set – Anodized and Cerakote
https://www.youtube.com/watch?v=ufCPWjxhJ2Q AT3 Tactical AR-15 M-LOK Receiver Set Get your custom Cerakote AR build started with the sleek AT3 Tactical M-LOK Receiver set. This kit includes the new AT-15 Lower Receiver...24 Options -
AT3™
AT3™ AT-15 Stripped Lower Receiver – Anodized and Cerakote
https://www.youtube.com/watch?v=ufCPWjxhJ2Q AT3 Tactical AR-15 Cerakote Stripped Lower Receiver The AT-15 is the AT3 Tactical take on the classic AR-15 lower receiver. This lower starts with a solid base of forged...16 Options16 Options16 Options -
AT3™NEW
AT3™ AT-15 Lower and Upper Receiver Set – Anodized and Cerakote
https://www.youtube.com/watch?v=ufCPWjxhJ2Q AT3 Tactical AR-15 Stripped Cerakote Upper and Lower Set The AT-15 Receiver Set includes a stripped lower and upper, in 7 Cerakote shades plus classic anodized black. This kit...8 Options8 Options8 Options -
AT3™NEW
AT3™ AT-15 Quad Rail Receiver Set – Anodized and Cerakote
https://www.youtube.com/watch?v=ufCPWjxhJ2Q AT3 Tactical AR-15 Cerakote Quad Rail Receiver Set Start your next AR build build with a rock solid foundation, and ready for your custom touch with Cerakote or anodized...32 Options32 Options32 Options -
NEW
Aero M4A1 Clone Stripped AR-15 Lower Receiver – Anodized Black
M4A1 Clone Stripped AR-15 Lower Receiver: Authentic Military-Inspired Base This Aero Precision lower receiver provides an authentic foundation for M4A1 clone builds. Featuring precise mil-spec engraving and construction, it offers... -
NEW
UTG PRO AR-15 Billet Receiver Set
UTG PRO AR-15 Billet Receiver Set: Premium USA-Made Foundation for Custom Builds The UTG PRO AR-15 Billet Receiver Set offers a high-quality, American-made foundation for custom AR-15 builds. Precision machined... -
NEW
UTG PRO AR-15 Ambi Billet Receiver Set
UTG PRO AR-15 Ambi Billet Receiver Set: Premium USA-Made Foundation for Ambidextrous Builds The UTG PRO AR-15 Ambi Billet Receiver Set offers a high-quality, American-made foundation for custom AR-15 builds... -
AT3™NEW
AT3™ AT-15 M-LOK Receiver Set – Bright White Cerakote
AT3 Tactical White M-LOK Receiver Set - Limited Edition! Start a new Bright White AR-15 build with this limited run from AT3 Tactical! This AT-15 M-LOK Receiver set includes an... -
NEW
Desert Tech Quattro-15 Lower Receiver w/ 1 QUADMAG-53 53 Round Magazine
Unleash Unparalleled Firepower Dominate the range with the Desert Tech Quattro-15 lower receiver, engineered for high performance. This innovative system integrates seamlessly with standard AR-15 uppers while accommodating the powerful... -
NEW
Desert Tech Quattro-15 Lower Receiver
The Modern Mag Master Upgrade your AR-15 experience with the Quattro-15 Lower Receiver, featuring compatibility with the high-capacity QMAG-53 (53-round double stack magazine) and traditional 30-round magazines. Its innovative design... -
RECOMMENDED
Aero Precision M4E1 AR-15 Lower Receiver
Enhanced Forged Lower Receiver With Exceptional Functionality The Aero Precision M4E1 enhanced forged lower receiver model delivers visual upgrades and billet aesthetics for your AR-15 build. Aero Precision custom designed...9 Options -
Aero Precision M5 .308 Stripped AR-10 Lower Receiver
The Perfect Lower Receiver For Your Rifle Caliber AR-10 Build This Aero Precision M5 .308 Stripped Lower Receiver is the perfect part you need to build your AR-10 from the...6 Options -
Aero Precision EPC-9 AR 15 Lower Receiver – Glock Magazine Compatible
Enhanced 9mm AR Lower Receiver for Pistol Caliber Carbines Before you ask - yes, it does take Glock mags. The EPC-9 offers enhanced ergonomics, simple installation, and unbeatable aesthetics for a...2 Options -
Aero Precision X15 AR-15 Gen 2 Stripped Lower Receiver
Improved AR-15 Lower For Easy Installation and Reliable Performance The Aero Precision Gen 2 AR-15 Stripped Lower Receiver is the perfect base for your custom AR15 build. Machined and designed...5 Options -
Anderson Manufacturing AM-15 Complete AR 15 Lower Receiver
Great Quality, Great Price, A Perfect Start to a Budget Build Anderson lowers are among the most affordable you can find, and they're a fantastic value. Forged 7075 T6 Aluminum... -
Aero Precision X15 Receiver Set – AR-15 Lower Receiver with Assembled Upper Receiver
Aero AR-15 Lower and Upper Receiver Set Aero Precision's X-15 receiver set makes a solid foundation for your next AR-15 build. This matching set of lower and upper receiver includes...4 Options -
FMK Firearms AR1 Extreme AR-15 Stripped Lower Receiver – .223/5.56 – Black Polymer
Extremely Durable & Lightweight Stripped Lower Receiver Made From Polymer The FMK Firearms AR1 Extreme AR-15 Stripped Lower Receiver is constructed from a state-of-the-art impact-resistant Polymer that is proven to... -
Aero Precision X15 AR-15 Gen 2 Stripped Lower Receiver with Trigger Guard
Improved Aero Precision Lower with Billet Trigger Guard The Aero Precision X15 Gen 2 is the stripped AR-15 lower of choice for many shooters across the nation. With improvements for...3 Options3 Options3 Options -
Ballistic Advantage AR15 Enhanced Lower Receiver
Ballistic Advantage AR15 Enhanced Lower Receiver The Ballistic Advantage AR15 Enhanced Lower Receiver offers a forged upper at an awesome price with billet aesthetics. This custom-designed enhanced forging is made... -
Aero Precision M4E1 Freedom Edition AR-15 Lower Receiver
Aero Precision US Flag AR-15 Lower Receiver Always Forward, Never Retreat! Aero Precision's M4E1 Lower Receiver adds unique engravings to a striking design to show your national pride. This AR-15... -
Unbranded AR Ambidextrous Lower Receiver
Affordable Ambidextrous AR-15 Lower Receiver Making the AR-15 friendly for left-handed shooters used to be a tall order. Thankfully for the southpaws out there, starting a completely ambidextrous lower build... -
Aero Precision Complete AR-15 Lower Receiver
Complete Lower Receiver for Completing Your Next AR-15 The Aero Precision Standard Complete Lower is the perfect base for your custom AR15 rifle to get the quick and easy way... -
Aero Precision M5 Freedom Edition .308 Stripped AR-10 Lower Receiver
American Flag Edition Aero Precision M5 Lower Doesn't get more American than a stars-forward battle rifle! This special version of the Aero M5 AR-10 lower receiver features an American flag... -
Aero Precision Tacoma Pride TAC-15 AR-15 Lower Receiver with Classic Logo
Aero Precision Lower with Retro Logo Aero Precision brought back their classic logo for one final run of forged AR-15 lower receivers. This limited edition lower features Aero Precision's old...