This fully assembled and NiB coated (5.56/.223) bolt assembly is compatible with most mil spec AR15, M16, M4 Carriers. EXO Nickel Boron provides permanent dry lubricity; increased wear and corrosion resistance. By reducing friction this bolt assembly will make for easy cleanup and improve the performance of your rifle.
Specifications
| Features | Nickel Boron treated; Extreme durability; Dry lubricity; Corrosion resistant |
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