Stag Arms Ar-15 A3 Upper Receiver Assembly 5.56mm Left Hand
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Stag Arms
Overview
The Stag Arms AR-15 A3 Upper Receiver Assembly is a complete upper designed for the AR-15 platform, chambered in .223 Wylde, which allows for optimal versatility with both .223 Remington and 5.56 NATO ammunition. The A3 receiver type features a flat top rail, providing a solid foundation for optics and accessories, while the mid-length gas system enhances reliability and reduces felt recoil during operation. This upper is commonly found in builds that prioritize a balanced shooting experience and versatility for various applications.
Specifications
Available Merchants(3)
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Frequently Built With
Based on build data
Lmt Mars-L Ambidextrous Ar-15 Stripped Lower Receiver
Lower Receiver
Expo Arms Ar-15 Rifle Buffer - 5.4 Oz
Buffer
HEXMAG Rubber AR-15 Tactical Pistol Grip, Black - HX-HTG-BLK
Pistol Grip
B5 Systems Polymer Trigger Guard - Od Green
Trigger Guard
FAB Defense GL-Core Black Recoil Reduction Buttstock - High-Impact Buttstock for Enhanced Shooting Comfort and Control - FXCIMPACTCPB
Stock
PSA AR-15 Lower Safe/Fire - 1728
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with 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.
| Product | Category | Times Built Together |
|---|---|---|
| Lmt Mars-L Ambidextrous Ar-15 Stripped Lower Receiver | Lower Receiver | 2 |
| Expo Arms Ar-15 Rifle Buffer - 5.4 Oz | Buffer | 2 |
| HEXMAG Rubber AR-15 Tactical Pistol Grip, Black - HX-HTG-BLK | Pistol Grip | 2 |
| B5 Systems Polymer Trigger Guard - Od Green | Trigger Guard | 1 |
| FAB Defense GL-Core Black Recoil Reduction Buttstock - High-Impact Buttstock for Enhanced Shooting Comfort and Control - FXCIMPACTCPB | Stock | 1 |
| PSA AR-15 Lower Safe/Fire - 1728 | 1 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| .223 Wylde | 100% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 100% |
Builds Featuring This Part
See all 2 →Builds in the community that include the Stag Arms Ar-15 A3 Upper Receiver Assembly 5.56mm Left Hand
| Build | Parts | Total |
|---|---|---|
 | 27 | $2143.19 |
 | 24 | $2608.98 |
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