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Fortis Manufacturing
Overview
The Fortis K1 AR-15 Enhanced End Plate Castle Nut Combo is designed to provide a robust and reliable attachment point for your buffer tube, made from durable 7075-T6 aluminum for added strength. Its enhanced design ensures a secure fit while reducing the risk of loosening over time, which is particularly beneficial for builders focused on performance and longevity in their setups. This end plate is commonly found in builds featuring a mid-length gas system and chambered in 5.56 NATO, making it a practical choice for a wide range of applications.
Based on build data

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Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Phase 5 Tactical Ar-15 90 Degree Ambi Safety Selector Black | 4 | |
| CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B | 4 | |
| Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension | 4 | |
| B5 Systems Trigger Guard ATG-001-01 | 3 | |
| Bravo Company M16 Bolt Carrier Group Black | 3 | |
| Maximize Your AR-15's Potential with Tacfire's 15" ACE M-LOK Handguard - Black Excellence - HG20-15 | 3 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 100% |
| Gas System | Percentage |
|---|---|
| Carbine | 100% |
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