BLEM - AT3™ AT-15 Stripped Lower Receiver - Safe/Semi Marking Version - Anodized
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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.
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Product description
AT3 Tactical Blemished AR-15 Stripped Lower Receiver – Black
The AT-15 is the AT3 Tactical take on the classic AR-15 lower receiver. This lower starts with a solid base of forged 7075-T6 aluminum construction. The same durable, lightweight material used from the beginning of the AR-15’s adoption as the M16 rifle ensures the AT-15 is as tough as they come. This blemished version comes in a classic anodized black finish and features standard “Semi” and “Safe” selector markings instead of pictogram markings.
These blemished AT-15 lowers have a cosmetic chip or finish blemish near the trigger pin area. The blem does not affect standard AR-15 parts compatibility or normal lower receiver function. The AT-15 also features a deeper magwell flare than mil-spec lowers, making it easier to reload. This lower receiver serves as the perfect starting point for your next build. Add a lower parts kit of your choice, or piece together something that’s exactly to your specifications. The AT-15 will accept any part compatible with a mil-spec lower receiver. Plus, you can save a little extra cash right away if you add an AT3 AT3 Enhanced Trigger Guard when you buy now!
Want to go for a full receiver set and save even more? Check out our AT-15 receiver set, complete with lower, trigger guard, and upper. Add in a handguard as well with the M-LOK Receiver Set, or the Quad Rail Receiver set. We’re offering standing discounts on each kit, so get what you want and save big.

Durable Construction and Finish
- Forged 7075-T6 Aluminum construction for tried-and-true toughness that won’t let you down
- Classic black Type 3 hardcoat anodized finish resists scratching and wear over time
- Mil-Spec dimensions ensure compatibility with a huge variety of AR-15 parts and accessories

Customizable
- Compatible with all mil-spec AR-15 components and numerous upgrades like triggers, pistol grips, safety selectors, and more
- Save a little extra on a black AT3 Enhanced Trigger Guard when you add one!
- Build it out your way with standard AR-15 lower parts, buffer components, grips, and fire control groups
Blem Details
- All blemished lowers have a cosmetic chip or finish blemish near the hammer pin area
- Selector markings are “Fire” and “Safe” only
- This blemished version does not have pictogram safety markings
- Cosmetic blem does not affect standard AR-15 lower receiver function or compatibility
Available Finish
- Black: Type 3 Hardcoat Anodized
Specifications
- Platform: AR-15
- Material: Forged 7075-T6 Aluminum
- Finish: Black Type 3 Hardcoat Anodized
- Markings: “Cal Multi”, “Fire” and “Safe” Safety Markings
- Blem Location: Cosmetic chip or finish blemish near hammer pin area
- Compatibility: Works with standard AR15 components and magazines
- Weight: 8.35oz
FAQ
Is this lower Mil-Spec?
The AT-15 uses 7075-T6 aluminum construction, and is available in a type 3 hardcoat anodized finish, which are mil-spec. The AT-15 also accepts all mil-spec AR-15 components. Most triggers, pistol grips, lower parts, buffer tubes, and upper receivers will have no issue fitting into this receiver.
What makes this a blem lower?
These lowers have a cosmetic chip or finish blemish near the hammer pin area. The blemish does not affect normal AR-15 lower receiver function or standard AR-15 lower parts compatibility.
Does this lower have pictogram safety markings?
No. This blemished version uses standard “Fire” and “Safe” selector markings instead of pictogram safety markings.
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