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Luth-AR
Overview
The Luth-Ar A2 Rear Sight Aperture is a factory replacement component designed for AR-15 platforms, providing a reliable sighting solution for accurate shooting. This rear sight is essential for achieving precise alignment with front sights, ensuring better target acquisition and improved shooting accuracy. It is commonly found in builds featuring a mid-length gas system and chambered in 5.56 NATO, making it a practical choice for standard configurations.
Based on build data

Law Tactical AR Folding Stock Adapter Gen 3 - HK
Stock Adapter
BLEM PSA AR15 Complete Classic Stealth Lower, Black
Lower Receiver
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Magpul AFG-2 Angled Fore Grip - Black
Foregrip
Strike Industries AR-10 Shift Pins, Black - SI-AR10-SHIFT-BK
Takedown Pin
Expo Arms Ar-15 Carbine Buffer Spring - 17-7 Steel
Buffer SpringAggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Law Tactical AR Folding Stock Adapter Gen 3 - HK | Stock Adapter | 27 |
| BLEM PSA AR15 Complete Classic Stealth Lower, Black | Lower Receiver | 19 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 18 |
| Magpul AFG-2 Angled Fore Grip - Black | Foregrip | 16 |
| Strike Industries AR-10 Shift Pins, Black - SI-AR10-SHIFT-BK | Takedown Pin | 16 |
| Expo Arms Ar-15 Carbine Buffer Spring - 17-7 Steel | Buffer Spring | 15 |
| Platform | Percentage |
|---|---|
| AR-15 | 84.8% |
| AR-10 | 12.5% |
| AR-9 | 2.7% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 70.6% |
| .223 Wylde | 12.7% |
| .308 Win | 7.8% |
| 300 Blackout | 2.9% |
| 9mm | 2% |
| .450 Bushmaster | 2% |
| 7.62x51 NATO | 1% |
| .223 Remington | 1% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 44.2% |
| Carbine | 29.9% |
| Rifle | 19.5% |
| Pistol | 5.2% |
| Blowback | 1.3% |
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