Click to see full view
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.
Based on build data
CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B
Magpul Moe K2 Grip Polymer Gray
Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension
Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers
B5 Systems Trigger Guard ATG-001-01
PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953
Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B | 13 | |
| Magpul Moe K2 Grip Polymer Gray | 10 | |
| Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension | 9 | |
| Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers | 9 | |
| B5 Systems Trigger Guard ATG-001-01 | 6 | |
| PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953 | 6 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
Builds in the community that include the PSA AR-15 Lower Safe/Fire - 1728
| Build | Parts | Total |
|---|---|---|
 | 20 | $978.61 |
 | 12 | $397.80 |
 | 16 | $796.27 |
 | 10 | $1124.48 |
 | 13 | $1391.31 |
2 global ratings
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.
