AT3 Tactical Ambi Complete AR-15 Lower Receiver - No Stock
or 4 interest-free payments of $63.04 with
This item is regulated, therefore your entire order will be shipped to an FFL dealer of your choosing. After you place your order, we will contact you to finalize these details.
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
- Free standard shipping on orders $139+ details
- Backed by the AT3 Lifetime Warranty! what it covers
Product description
AT3 Tactical Ambi Complete AR-15 Lower Receiver – No Stock
Features
- Assembled complete AR-15 lower receiver built on the AT3 AT-15 forged 7075-T6 aluminum lower
- Ambidextrous magazine release and ambidextrous safety selector give the lower improved left- and right-side control access
- AT-15 lower features mil-spec AR-15 compatibility, “Cal Multi” markings, pictogram safety markings, and a deeper-than-mil-spec flared magwell
- Includes installed AT3 enhanced trigger guard, A2 pistol grip, buffer tube, buffer spring, carbine buffer, castle nut, and end plate
- No-stock configuration leaves the rear furniture open for customers who already have a specific stock picked out
This complete AR-15 lower receiver is assembled from an AT3-curated parts selection built around function, ease of use, and components commonly purchased together. The ambidextrous controls give the lower better access from either side, while the no-stock configuration keeps the setup flexible for customers who want to choose their own rear furniture.
Already have a lower? This same parts package is also available as an unassembled lower build kit without the receiver.
Note: Stock is not included. Parts may vary based on availability and may be substituted with components of equal or greater value. Individual branded components are covered by their respective manufacturer warranties.
Specifications
- Brand: AT3 Tactical
- Model: Ambi Complete AR-15 Lower Receiver – No Stock
- MPN: AT3-AMBI-AR15-COMLWR-NS
- Platform: AR-15
- Configuration: Assembled complete AR-15 lower receiver
- Lower Receiver: AT3 AT-15 Stripped Lower Receiver – Anodized Black
- Lower Receiver Material: Forged 7075-T6 aluminum
- Lower Receiver Finish: Type 3 hardcoat anodized black
- Lower Receiver Markings: “Cal Multi” with pictogram safety markings
- Controls: Ambidextrous magazine release and ambidextrous safety selector
- Grip: A2 mil-spec pistol grip
- Trigger Guard: AT3 Enhanced Billet Trigger Guard Assembly
- Stock: Not included
- Buffer System: Carbine buffer assembly
- Buffer Weight: 3.0 oz
- Color: Black
What’s Included
- 1x AT3 AT-15 Stripped Lower Receiver – Anodized Black
- 1x AT3 AR-15 Mil-Spec Bolt Catch – Black
- 1x AT3 Mil-Spec AR-15 Bolt Catch Plunger
- 1x AT3 Mil-Spec AR-15 Bolt Catch Pin
- 1x AT3 Mil-Spec AR-15 Bolt Catch Spring
- 1x AT3 Mil-Spec AR-15 Buffer Retainer
- 1x AT3 Mil-Spec AR-15 Buffer Retainer Spring
- 2x AT3 Mil-Spec AR-15 Pivot Pin/Takedown Pin Detent Spring
- 1x AT3 AR-15 Enhanced Trigger Guard Assembly
- 1x AT3 Mil-Spec AR-15 Magazine Catch Button – Black
- 1x AT3 Mil-Spec AR-15 Magazine Catch Spring
- 1x AT3 Mil-Spec AR-15 Pistol Grip Lock Washer
- 1x AT3 Mil-Spec AR-15 Pistol Grip Screw
- 1x AT3 Mil-Spec AR-15 Pivot Pin – Black
- 1x AT3 Mil-Spec AR-15 Selector Detent
- 1x AT3 Mil-Spec AR-15 Selector Detent Spring
- 1x AT3 Mil-Spec AR-15 Takedown Pin – Black
- 2x AT3 Mil-Spec AR-15 Pivot Pin/Takedown Pin Detent
- 1x Arms Unlimited Ambidextrous AR-15 Magazine Release
- 1x AT3 Ambidextrous AR-15 Safety Selector – Black
- 1x AT3 Carbine Buffer – 3.0 oz
- 1x AT3 Carbine Buffer Spring for AR-15
- 1x AT3 Castle Nut for AR-15 Buffer Tubes – Black
- 1x AT3 Mil-Spec Buffer Tube – AR-15 – Black
- 1x AT3 Mil-Spec End Plate for AR-15 – Black
- 1x AT3 AR-15 A2 Mil-Spec Pistol Grip
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Questions & Answers
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Warranty & returns
Backed by the AT3 Lifetime Warranty!

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.
This includes AT3 Red Dot Sights, Handguards, Iron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.
In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.
If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.
If your product is in need of warranty service, please contact AT3 Tactical to start the process
Our contact info is available here. To expedite processing, please provide your order information and description of the defect.
Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.











