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Palmetto State Armory
Overview
The PSA AR-15 Lower Safe/Fire - 1728 is a stripped lower receiver made from 7075-T6 aluminum, designed specifically for the AR-15 platform. This lower features the essential safe and fire markings, allowing for straightforward assembly and compliance with firearm regulations. Builders commonly incorporate this lower in carbine gas system builds chambered for 5.56 NATO, making it a versatile choice for a range of applications.
PSA AR-15 Lower Safe/Fire - 1728 ranked #195 of the 507 lower receivers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #198 of the 958 lower receivers builders have added. Builds with this lower receiver are nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today the one retailer we track has it in stock. Prices barely moved in August 2026, holding around $74.99, so there haven't been real sales lately. Buying today, the lowest price is $79.99 at Palmetto State Armory, above August's low of $74.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every lower receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Lower Receiver Trends →The part most often added in each category by the 67 builds that include this one
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Builds in the community that include the PSA AR-15 Lower Safe/Fire - 1728
| Build | Parts | Total |
|---|---|---|
 | 20 | $1155.17 |
 | 12 | $409.51 |
 | 16 | $1143.88 |
 | 10 | $1169.13 |
 | 13 | $1385.87 |
2 global ratings
Top reviews
Got this lower for a budget build and it's decent. The safe/fire markings are crisp. It assembled without major issues, though the buffer tube threads were a little tight, nothing a little force and a vice block couldn't fix. Overall, a functional lower that does the job.
Used this PSA stripped lower for my first AR build. Machining is clean, and the 7075-T6 aluminum feels robust. Marked safe/fire clearly. Assembled it with parts from BCM and Aero, everything fit up fine for my 5.56 carbine build. Solid foundation for any AR-15 project.
