AR-15Specifications
Mfr data- Weight
- 0.20 oz
- finish
- Phosphate
- material
- Steel
- mil spec
- Yes
- country of origin
- USA
Mil-SpecLCL-P-3508
Mil-Spec Standard Castle Nut
The standard mil-spec castle nut for securing the buffer tube to the lower receiver. Must be properly staked after torquing to 38-42 ft-lbs. The most basic component but critical for a reliable build.
Castle Nut0.20 oz
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