Energetic Armament Direct Thread Adapter – 5/8×24 (Barrel) to 1.375×24 (Suppressor/HUB) – Titanium – Black Cerakote® (EA21) – UPC 853406008213

Unlock the HUB ecosystem on your .30-cal hosts with minimal weight and maximum precision. The Energetic Armament Direct Thread Adapter (EA21) converts standard 5/8×24 barrel threads to the industry-preferred 1.375×24 (“HUB”) suppressor interface, giving you broad compatibility with today’s most popular modular cans and rear mounts. Machined from aerospace-grade titanium and finished in black Cerakote®, EA21 delivers superior strength-to-weight, corrosion resistance, and repeatable alignment—ideal for hunters, precision shooters, and suppressed carbine users who value direct-thread simplicity and return-to-zero consistency.

Why HUB (1.375×24)? It’s the universal rear-thread standard used by many leading suppressor brands. With EA21, your 5/8×24 barrel can host a wide array of HUB-compatible suppressors and accessories—without rethreading or bulky adapters.

Key Benefits

• Titanium advantage: Outstanding strength-to-weight and heat resistance help keep your rifle lively up front, with threads that hold up under hard use.

• Concentric alignment: Tight-tolerance machining supports bore concentricity, reducing the risk of baffle strikes and helping minimize point-of-impact shift.

• Direct-thread repeatability: Fewer moving parts than QD systems for a lighter, low-profile interface and consistent on/off zero—perfect for precision and hunting rigs.

• Durable protection: Black Cerakote® guards against carbon, weather, and solvents while maintaining a professional, low-glare finish.

• HUB flexibility: Pair your 5/8×24 host with a wide ecosystem of 1.375×24 suppressors, rear caps, and mounts.

Feature Highlights

• Barrel/Muzzle Threads (male): 5/8×24 (RH)

• Suppressor Threads (female): 1.375×24 (HUB pattern)

• Material: Titanium (precision CNC-machined)

• Finish: Black Cerakote®

• Form Factor: Compact, weight-conscious design to preserve balance and keep OAL down

• Model / SKU: EA21

• UPC: 853406008213

Always verify your barrel is threaded 5/8×24 (common for .30-cal rifles) and your suppressor/rear cap uses 1.375×24 (HUB) before installation.

Ideal Use Cases

• Precision & long-range rifles: Direct-thread repeatability supports stable dope and predictable cold-bore shots.

• Hunting rifles: Lightweight titanium construction maintains nimble handling while adding suppressor compatibility.

• Suppressed carbines: Clean, low-profile interface that avoids the bulk of some QD systems.

Installation (Quick Start)

1. Confirm thread specs: Barrel 5/8×24 ↔ suppressor/rear mount 1.375×24 (HUB).

2. Prep the surfaces: Degrease threads and shoulder; remove carbon and any old thread-locker.

3. Hand-start only: Thread the EA21 onto the barrel by hand to avoid cross-threading; snug to spec against a true, square shoulder.

4. Mount the suppressor: Follow the suppressor manufacturer’s torque and non-permanent, high-temp thread locker guidance (e.g., Rocksett® where appropriate).

5. Bore check: With the bolt removed, visually confirm a clear, centered bore line through the adapter and suppressor.

6. Heat-cycle verify: After your first range session, re-check torque and witness marks to confirm nothing has shifted.

Pro Tip: Add a small witness mark across the adapter and barrel shoulder to immediately spot any rotation during early use.

On-Range Performance You’ll Notice

• Repeatable zero: Direct-thread interfaces excel at consistent return-to-zero when removing and reinstalling the can.

• Low added mass: Titanium keeps front-end weight minimal and reduces harmonic disruption.

• Rugged longevity: Cerakote + titanium stand up to moisture, solvents, and high round counts.

Compatibility Guidance

• Suppressors/Rear Caps: Works with 1.375×24 (HUB) threaded suppressors and many modular systems.

• Hosts: Any barrel cut 5/8×24 with a true, square shoulder. (Common on .30-cal and multi-caliber rifles.)

• Shims/Collars: Use only as directed by the suppressor/device manufacturer; proper shoulder geometry is critical for alignment.

Care & Maintenance

• Post-range cleanup: Allow to cool; brush threads with nylon/bronze and use a carbon-safe solvent.

• Prevent galling: Start clean, dry threads by hand; a light oil film is recommended for storage.

• Routine inspection: Check for nicks, unusual wear, or carbon locking before the next session.

Responsible Use & Legal

• Know the law: Suppressors and related components are regulated. Ensure federal, state, and local compliance (NFA where applicable).

• Safety first: Re-confirm bore alignment whenever you change adapters, mounts, or muzzle devices.

• Gunsmithing help: If unsure about shoulder trueness or thread spec, consult a qualified gunsmith.

Specifications (At-a-Glance)

• Product: Energetic Armament Direct Thread Adapter

• Barrel Threads: 5/8×24 (male)

• Suppressor Threads: 1.375×24 HUB (female)

• Material: Titanium

• Finish: Black Cerakote®

• Model: EA21

• UPC: 853406008213

SEO Highlights (Quick Scan)

• Energetic Armament 5/8×24 to 1.375×24 HUB direct-thread adapter

• Titanium construction with Black Cerakote finish

• Precision concentricity, reduced POI shift, repeatable zero

• EA21, UPC 853406008213

Suggested Meta Title

Energetic Armament Direct Thread Adapter – 5/8×24 to 1.375×24 HUB, Titanium, Black Cerakote | EA21 | UPC 853406008213

Suggested Meta Description

Expand suppressor compatibility with the Energetic Armament EA21. Titanium direct-thread adapter converts 5/8×24 barrels to 1.375×24 (HUB) for lightweight, repeatable precision with a durable black Cerakote finish. Model EA21, UPC 853406008213.

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