The Castle Nut is constructed of 4140 steel with a phosphate coating. It is compatible with your AR-15.
LBE Unlimited ARCNUT Castle Nut 4140 Steel Black Phosphate AR-15
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★★★★★ Rated 5 out of 5
$9.50 Original price was: $9.50.$7.31Current price is: $7.31.
Availability: 227 in stock
| Brand | LBE Unlimited |
| Category | Screws & Nuts |
| Model | Castle Nut |
| Material | 4140 Steel |
| Firearm Type | AR Platform |
| Finish | Black Phosphate |
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