FAB Defense AR-15 Iron Sight Set Flip Up - FRBS-B
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FAB Defense
Overview
The FAB Defense AR-15 Iron Sight Set Flip Up - FRBS-B is a pair of folding iron sights designed for quick deployment and reliable performance. Made from durable polymer, these sights provide a lightweight option that won’t add unnecessary bulk to your rifle while maintaining a solid sight picture. This set is commonly found in mid-length gas system builds chambered in 5.56 NATO, making it a practical choice for a variety of uses.
Specifications
Frequently Built With
Based on build data
BLEM PSA AR15 Complete Classic Stealth Lower, Black
Lower Receiver
Law Tactical AR Folding Stock Adapter Gen 3 - HK
Stock Adapter
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Magpul AFG-2 Angled Fore Grip - Black
Foregrip
Radian Raptor Charging Handle & Talon Safety Selector Combo - Od Green
Charging Handle
Strike Industries AR-10 Shift Pins, Black - SI-AR10-SHIFT-BK
Takedown PinBuild 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 |
|---|---|---|
| BLEM PSA AR15 Complete Classic Stealth Lower, Black | Lower Receiver | 60 |
| Law Tactical AR Folding Stock Adapter Gen 3 - HK | Stock Adapter | 45 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 45 |
| Magpul AFG-2 Angled Fore Grip - Black | Foregrip | 42 |
| Radian Raptor Charging Handle & Talon Safety Selector Combo - Od Green | Charging Handle | 39 |
| Strike Industries AR-10 Shift Pins, Black - SI-AR10-SHIFT-BK | Takedown Pin | 38 |
| Platform | Percentage |
|---|---|
| AR-15 | 85% |
| AR-10 | 12% |
| AR-9 | 2.9% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 73.9% |
| .223 Wylde | 11.5% |
| 300 Blackout | 4.2% |
| .308 Win | 4.2% |
| .450 Bushmaster | 1.7% |
| 6mm ARC | 1% |
| 7.62x39mm | 0.7% |
| 9mm | 0.7% |
| .458 SOCOM | 0.3% |
| 6.5 Grendel | 0.3% |
| .45 ACP | 0.3% |
| .350 Legend | 0.3% |
| 7.62x51 NATO | 0.3% |
| .50 Beowulf | 0.3% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 50.2% |
| Carbine | 27.9% |
| Rifle | 13.1% |
| Pistol | 8.3% |
| Intermediate | 0.4% |
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