K-SPEC Enhanced AR15 Bolt- 5.56/ 300 Blackout, Dual Ejector, NP3, C158

The K-SPEC dual ejector system uses mil-spec ejectors and springs that require no proprietary parts.  Ejector holes are centered on the lugs to avoid any reduction in strength of the bolt.  The dual ejector system increases the ejection reliability and adds consistency to the ejection pattern. KAK Industry has been manufacturing dual ejector bolts for the AR10/LR308 platform for over a decade and has used that experience to create a durable and reliable dual ejector system for the AR15 platform.

The K-SPEC Bolt is backwards compatible with all standard mil-spec BCG components.  The K-SPEC bolt can be used in any AR15 style direct impingement system.

Complete Assembled Bolt Only

• Bolt- C158 steel, outside diameters ground to .0002 tolerances, Shot Peened, MPI test, NP3 Finish
• Extractor- 4140 steel, fully machined, Phosphate coated
• Extractor pin- S7 tool steel, ground, heat treated
• Ejector- S7 tool steel, ground, heat treated
• 1.44 oz

Machined in house and assembled using only the finest steels and components. KAK Industry takes pride in producing some of the finest Mil-Spec/ Enhanced AR15 bolts available, made 100% in house at our MO facility using Doosan machining centers, Tsugami Swiss turning, and the latest in FANUC robotics combined into an automated cell giving us lights out production capability.  In house automated CMM Inspection processes ensure consistent quality. 

NP3 coating is a specialized type of coating often used in firearms and other high-wear applications to enhance durability and reduce friction. It's known for its ability to offer excellent resistance to wear, corrosion, and fouling. The NP3 coating is a proprietary finish.

The coating is applied through an electroless nickel plating process combined with a fluoropolymer, which gives it its unique properties. The fluoropolymer component helps to reduce friction, which can improve the performance and longevity of the coated parts. This makes NP3 particularly popular for use in firearms, where its low friction and resistance to corrosion and fouling are highly valued.

If you have any specific questions about NP3 coating or need details on how it's applied or its benefits in a particular context, feel free to ask!