Anderson Manufacturing Closed Trigger AR15-A3 Lower Receiver AR15-A3-LWFORUM
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Anderson Manufacturing
Overview
The Anderson Manufacturing Closed Trigger AR15-A3 Lower Receiver is a stripped lower designed for the AR-15 platform, made from durable 7075-T6 aluminum and featuring a forged construction. This lower receiver accommodates a variety of calibers thanks to its multi-caliber designation and includes a trigger pin hole sized at .154 inches, which is standard for most AR-15 trigger assemblies. This component is commonly found in a range of custom builds, particularly those focused on versatility and reliability.
Specifications
Anderson Manufacturing Closed Trigger AR15-A3 Lower Receiver AR15-A3-LWFORUM
Available Merchants(3)
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September 2026 on GunPartPicker
Anderson Manufacturing Closed Trigger AR15-A3 Lower Receiver AR15-A3-LWFORUM ranked #248 of the 477 lower receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #520 of the 1,003 lower receivers builders have added.
It was out of stock everywhere we track for all of September 2026, and today none of the 3 retailers we track has it in stock right now. Listed prices start at $39.99 at KY Gun Company for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 4 →Builds in the community that include the Anderson Manufacturing Closed Trigger AR15-A3 Lower Receiver AR15-A3-LWFORUM
| Build | Parts | Total |
|---|---|---|
 | 20 | $1878.95 |
 | 12 | $701.52 |
 | 11 | $909.15 |
| 12 | $1365.50 |
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