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Fortis Manufacturing
Overview
The Fortis Enhanced Detents & Spring Kit is designed to provide reliable function for your AR-15 takedown pins. Made from steel, these detents and springs ensure consistent performance and durability, which is crucial for maintaining the integrity of your firearm's assembly. This kit is commonly found in builds that prioritize a smooth takedown experience and enhanced reliability during operation.
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Based on build data

Strike Industries Extended Bolt Catch
Bolt Catch
Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom
Lower Receiver
Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black
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Wmd Guns Nitromet Ar-15 Bolt Catch
Bolt Catch
Law Tactical AR Folding Stock Adapter Gen 3 - HK
Stock Adapter
Timber Creek AR Oversized Trigger Guard, Black - AR OTG B
Trigger GuardAggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Strike Industries Extended Bolt Catch | Bolt Catch | 130 |
| Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom | Lower Receiver | 98 |
| Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black | Gas Block | 86 |
| Wmd Guns Nitromet Ar-15 Bolt Catch | Bolt Catch | 85 |
| Law Tactical AR Folding Stock Adapter Gen 3 - HK | Stock Adapter | 78 |
| Timber Creek AR Oversized Trigger Guard, Black - AR OTG B | Trigger Guard | 77 |
| Platform | Percentage |
|---|---|
| AR-15 | 79.8% |
| AR-10 | 17.9% |
| AR-9 | 2.3% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 66.7% |
| .223 Wylde | 13.7% |
| 300 Blackout | 6.9% |
| .308 Win | 4% |
| 9mm | 1.9% |
| 6mm ARC | 1.7% |
| .450 Bushmaster | 1.5% |
| 7.62x39mm | 0.8% |
| .458 SOCOM | 0.8% |
| 6.5 Grendel | 0.8% |
| .204 Ruger | 0.2% |
| .22 LR | 0.2% |
| .223 Remington | 0.2% |
| .224 Valkyrie | 0.2% |
| 6.5 Creedmoor | 0.2% |
| 6.8 SPC II | 0.2% |
| 7.62x51 NATO | 0.2% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 46.7% |
| Carbine | 26.9% |
| Rifle | 15.3% |
| Pistol | 9.8% |
| Blowback | 0.7% |
| Intermediate | 0.5% |
| Proprietary | 0.2% |
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