--- title: "KAK Industry K-Spec AR-15 Bolt, Black" description: "K-Spec enhanced bolt for AR-15 5.56 and 300 Blackout platforms, featuring dual mil-spec ejectors and springs for consistent ejection." canonical_url: "https://www.kygunco.com/product/kak-industries-k-spec-enhanced-bolt-for-ar-15-5.56-300-blk-black" meta: author: KYGUNCO "og:description": "K-Spec enhanced bolt for AR-15 5.56 and 300 Blackout platforms, featuring dual mil-spec ejectors and springs for consistent ejection." "og:image": "https://cdn.kygunco.com/assets/products/283638/thumbnail.jpg?v=1743081335" "og:image:height": "500" "og:image:width": "500" "og:title": "KAK Industry K-Spec AR-15 Bolt, Black" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts) / [Upper Receiver Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/upper-receiver-parts) / KKN-303-0502-011 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/283638/main.jpg?v=1743081335) For illustration purposes only, this image may not be an exact representation of the product. # KAK INDUSTRY K-SPEC Enhanced Bolt for AR-15 5.56/300 Blk Black The KAK Industry K-Spec enhanced bolt is designed for AR-15 platforms chambered in 5.56 and 300 Blackout. Its dual ejector system uses mil-spec ejectors and springs to support consistent ejection, while centered ejector holes preserve the strength of the bolt lugs. $80.99 ** 5 interest-free payments of **$16.20** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Fulfilled by a partner warehouse. ** Partner Fulfilled Almost gone. Order now before it sells out. Item # 283638 Style KKN-303-0502-011 UPC 811163035743 Condition New Manufacturer [KAK Industry](https://www.kygunco.com/brand/kak-industry) Weight 1 lb The K-Spec dual ejector system is a high-performance upgrade designed to enhance the reliability and consistency of ejection in your AR-15. By utilizing mil spec ejectors and springs, the system avoids the need for proprietary parts, ensuring easy maintenance and replacement. The centered ejector holes on the lugs maintain the bolt's strength, preventing any reduction in structural integrity. This dual ejector system improves ejection reliability, leading to more consistent ejection patterns, particularly under demanding conditions. With KAK Industry's extensive experience in creating dual ejector systems for the AR10/LR308 platform, they've brought that same durable and reliable technology to the AR-15, making it an excellent choice for those seeking a rugged, high-performance BCG upgrade. ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from KAK Industry ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/kak-industries-k-spec-enhanced-bolt-for-ar-15-5.56-300-blk-black#webpage","@type":"WebPage","description":"K-Spec enhanced bolt for AR-15 5.56 and 300 Blackout platforms, featuring dual mil-spec ejectors and springs for consistent ejection.","name":"KAK Industry K-Spec AR-15 Bolt, 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