The castle nut is used to secure the carbine receiver extension on standard AR-15s. Weight No Color Black Finish No Materials No Manufacturer No Warranty No Compatibility AR-15, M-16 Gas Tube Type No Handguard Length No Thread Pitch Multiple Thread Pitchs Available Fluting No Model No Manufacturer’s Suggested Retail Price $6.95
| Weight | No |
|---|---|
| Color | Black |
| Finish | No |
| Materials | No |
| Manufacturer | No |
| Warranty | No |
| Compatibility | AR-15, M-16 |
| Gas Tube Type | No |
| Handguard Length | No |
| Thread Pitch | Multiple Thread Pitchs Available |
| Fluting | No |
| Model | No |
| Manufacturer’s Suggested Retail Price | $6.95 |
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