Kak K-Spec Enh Ar Bolt 556/300Blk Ph

The Kak K-Spec Enhanced AR bolt for 5.56 and .300 Blackout is a drop-in assembled bolt carrier component built for shooters who want reliability without proprietary dependencies. This mil-spec compatible bolt features a dual-ejector design that works with standard mil-spec parts—no custom or manufacturer-specific components required—making it a straightforward upgrade or replacement for any AR-15 platform rifle. Whether you're running a duty rifle, competition build, or hunting setup, this bolt prioritizes consistent ejection performance and long-term durability.

The dual-ejector system is engineered with ejector holes positioned directly on the bolt lugs, a design choice that maintains the structural integrity of the bolt itself while improving how reliably it ejects spent casings. This centered-lug geometry eliminates weak points and ensures that ejection cycles remain consistent shot after shot—important whether you're zeroing, training, or afield. The 9310 steel construction with phosphate finish resists corrosion and handles the demands of range work, hunting, or storage without special babying.

Because the K-Spec bolt is fully backward compatible with all standard mil-spec bolt carrier group components, you can use it in any AR-15 direct impingement system without modification or fitment concerns. If you already own a bolt carrier or need to mix parts across builds, this bolt slots in without surprises. Kak Industry has built its reputation on no-frills, battle-ready components, and this bolt reflects that ethos—solid performance, mil-spec reliability, and zero marketing hype.

Key Features

• Dual-ejector system for improved and consistent ejection reliability
• Mil-spec ejectors and springs—no proprietary parts required
• Ejector holes centered on bolt lugs to preserve structural strength
• 9310 steel with phosphate finish for corrosion resistance
• Fully assembled and ready to install
• Compatible with all standard mil-spec bolt carrier group components
• Works in any AR-15 direct impingement platform

Specifications

Frequently Asked Questions

Will this K-Spec bolt work with my existing bolt carrier and AR-15?

Yes. The K-Spec bolt is fully compatible with all standard mil-spec bolt carrier group components and fits any AR-15 direct impingement system. It's a drop-in replacement or upgrade with no modification needed.

What makes the dual-ejector design better than a standard bolt?

The dual-ejector system increases ejection reliability and consistency by using two mil-spec ejectors and springs. The ejector holes are centered on the bolt lugs, which preserves the bolt's structural integrity while improving how reliably cases are ejected with each shot.

Can I use this bolt for both 5.56 and .300 Blackout?

Yes. This K-Spec bolt is chambered for both 5.56 NATO and .300 Blackout, so a single bolt works across both calibers in compatible AR-15 platforms.

What comes with this product?

You receive the assembled bolt only. It does not include a bolt carrier group, springs, or other components—just the completed bolt ready to install into your existing carrier or as part of a new build.