AP5-SD K Conversion

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$2,100.00

2 in stock

During checkout, please ensure that you select an FFL (Federal Firearms Licensee) that permits suppressor transfers (SOT). Failure to do so may result in an additional $25 processing fee for us to arrange an eligible FFL on your behalf.
Military and LEO, please contact us to claim your 5% discount.

AP5-SD K Integrally Suppressed Conversion by Ronin Arms

Build Time: 3–5 Months | Precision-Crafted | Made in the USA


✅ Why Upgrade Your AP5-SD with Ronin Arms?

If you own a Century Arms AP5-SD , you already have one of the most compact and reliable roller-delayed firearms on the market, modeled after the legendary MP5-SD. But what if you could push its performance to the ultimate level—achieving whisper-quiet suppression, perfect cycling, and reinforced durability that outlasts the competition?

That’s exactly what you get with the Ronin Arms AP5-SD K Integrally Suppressed Conversion—an elite upgrade for operators, law enforcement professionals, and serious firearm enthusiasts who demand nothing but the best.

When you choose Ronin Arms, you’re not just investing in a conversion; you’re securing:
Industry-Leading Suppression Technology
Expert Hand-Fitted Craftsmanship
Premium Components for Maximum Longevity
Rigorous Live-Fire Testing & Quality Control


❌ Models & Configurations We Do NOT Accept

To prevent delays or returns, please review the following non-eligible models and conditions:

  • ❌ AP5 Standard (Full-Size) – Not compatible with this SD-K conversion

  • ❌ AP5-P (K Receiver Models) – Cannot be converted into an SD platform

  • ❌ Non-Century Receivers or Clone Variants – Only factory Century Arms AP5-SD K is accepted

  • ❌ Damaged, Altered, or Previously Converted Guns – No builds on compromised receivers or previously modified SD setups

📌 Before shipping your firearm, confirm your exact model to avoid delays and return fees.


🔍 What Is an Integrally Suppressed AP5-SD K Conversion?

This conversion replaces your factory barrel and shroud with a precision-engineered, integrally suppressed system. Unlike thread-on suppressors, an integral system provides:
Superior Sound Reduction without unnecessary length
Balanced Handling & Maneuverability
No Point-of-Impact Shift during removal or reattachment
True SD Authenticity for collectors and professionals

Perfect for:

  • Tactical Operators & Law Enforcement who need stealth performance

  • Home Defense Owners seeking reliability and sound suppression

  • Collectors & Suppressor Enthusiasts demanding authentic SD builds


🔥 Key Features of the Ronin Arms AP5-SD K Conversion

New for 2025 – 8” Wakizashi Titanium Suppressor

The Wakizashi Titanium suppressor is the heart of this system, delivering:
✔ Aerospace-grade Titanium Construction – Ultra-light and incredibly strong
Long Service Life – Estimated 500,000 rounds under standard use
Easy Cleaning – Fully ultrasonic cleaner compatible
Minimal First-Round Pop – Engineered for consistent suppression
Perfect Balance – Eliminates excessive front-end weight


Ronin Arms 5.75” Ported SD Barrel

✔ Optimized gas regulation for subsonic performance
✔ Runs reliably with 115gr, 124gr, and 147gr ammo
✔ Installed and head-spaced by Ronin Arms experts


Complete SD Component Upgrade Includes:

  • SD Cocking Tube & Reinforcement Support for smooth cycling

  • 120° Locking Piece for reduced recoil and superior function

  • High-Temp Sealing Ring for gas retention and minimal carbon fouling

  • TIG-Welded Barrel Shroud for unmatched strength


🛠 How the Conversion Process Works

1️⃣ Disassembly – We remove the factory barrel and SD components
2️⃣ Install Ronin Arms Barrel & Suppressor System – Precision fit for perfect cycling and sound reduction
3️⃣ Cocking Tube & Shroud Integration – Hand-fitted for factory-level alignment
4️⃣ TIG Welding & Structural Reinforcement – For maximum longevity
5️⃣ HK Black Factory Finish – A clean, corrosion-resistant coating
6️⃣ Live-Fire Testing & QC – Each build is thoroughly tested before shipping


Technical Specifications (Copy-Friendly)

  • Suppressor: 8” Wakizashi Titanium (Integrally Suppressed)

  • Barrel Length: 5.75” Ronin Arms Ported Barrel

  • Locking Piece: 120° HK Spec

  • Estimated Service Life: 500,000 rounds

  • Maintenance: Ultrasonic cleaner compatible

  • Finish: HK Factory Black, corrosion-resistant coating


📦 Shipping & Transfer Information

Ship ONLY: Barreled receiver & bolt carrier group
Include: Printed order receipt (required)
Suppressor Transfer: Processed via Form 3 to your FFL/SOT
Original Barrel Returned: Included with your converted firearm

🚫 Do NOT send extra parts (stocks, trigger packs, optics) – A $50 handling fee applies, and these items are not guaranteed to be returned


⏳ Build Time & ATF Notes

  • Estimated Build Time: 3–5 months (quality takes time)

  • ATF Form 3 Transfer: Required for suppressor (we do not control wait times)
    ⚠ Calling for status updates will NOT speed up the process


🚫 Refund & Cancellation Policy

  • No refunds after the suppressor is Form 3’d

  • All cancellations incur a 20% restocking fee


✅ The Ronin Arms Advantage

✔ Specialized in SD Conversions – MP5, AP5, and advanced integrally suppressed platforms
✔ Crafted by Hand – No mass production shortcuts
✔ Premium Titanium Suppressors for ultimate performance
✔ Rigorous Live-Fire Testing for reliability under real conditions


🔥 Why This Matters for You

Ultra-Quiet Shooting – Industry-leading sound suppression
Compact Design – Perfect for CQB or discreet use
Reduced Recoil – Smooth, controllable shooting
Enhanced Value – Adds significant resale appeal
Built to Last – Reinforced welds and premium components


✅ Order Your AP5-SD K Conversion Now

Ronin Arms conversions are in high demand, and we limit production to maintain quality standards. Don’t miss your chance to own the most advanced AP5-SD K integrally suppressed system on the market.

🚀 Experience elite suppression.
👉 Click “Add to Cart” now and secure your build today!

📩 Questions? Contact info@roninarmsaz.com
📌 Follow us on Instagram and share your build: #RoninArms #RoninFamily


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