AP5-SD 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 a platform built on one of the most iconic designs in firearms history—the MP5-SD. But what if you could elevate its performance to elite levels, achieving whisper-quiet suppression, perfect cycling, and durability that lasts for decades?
That’s what you get with the Ronin Arms AP5-SD Integrally Suppressed Conversion—a premium upgrade designed for shooters who demand absolute precision and performance.
When you choose Ronin Arms, you’re investing in:
✔ 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 avoid delays or returns, please note that this conversion is for full-size AP5-SD models only. The following are NOT accepted:
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❌ AP5-P (K Receiver Models) – Not compatible with this full-size SD conversion
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❌ AP5-SD K (Compact Variant) – See our dedicated AP5-SD K listing for that conversion
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❌ Non-Century Receivers or Clone Variants – Only genuine Century Arms AP5-SD is eligible
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❌ Damaged, Altered, or Previously Converted Guns – No builds on compromised receivers or previously modified SD platforms
📌 Confirm your model before shipping to avoid return fees.
🔍 What Is the AP5-SD Integrally Suppressed Conversion?
This conversion completely transforms your AP5-SD into a precision-engineered integrally suppressed system, providing:
✔ Superior Sound Reduction over thread-on cans
✔ Perfect Weight Balance & Authentic SD Handling
✔ No Point-of-Impact Shift during suppressed fire
✔ True SD Performance with modern engineering improvements
Perfect for:
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Tactical Operators & Law Enforcement needing reliability and stealth
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Home Defense Owners seeking reduced signature and maximum control
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Collectors & Enthusiasts demanding authentic, high-quality SD platforms
🔥 Key Features of the Ronin Arms AP5-SD Conversion
New for 2025 – 12” Katana Titanium Suppressor
The Katana Titanium suppressor is the ultimate in performance, strength, and weight reduction.
✔ Aerospace-Grade Titanium – Ultra-light, ultra-durable
✔ Long Service Life – Estimated 500,000 rounds under standard use
✔ Maintenance Made Simple – Compatible with ultrasonic cleaning
✔ Minimal First-Round Pop – Advanced engineering for quiet consistency
✔ Balanced for Control – Eliminates excessive forward weight
Ronin Arms 6.75” Ported SD Barrel
✔ Optimized Gas Regulation for subsonic performance
✔ Compatible with 115gr, 124gr, and 147gr ammo
✔ Professionally installed and head-spaced for accuracy
Complete SD Component Upgrade Includes:
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SD Cocking Tube & Reinforced Support for smooth operation
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120° Locking Piece for softer recoil and reliable function
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High-Temp Sealing Ring to maintain gas seal and reduce fouling
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TIG-Welded Barrel Shroud for long-term durability
🛠 How the Conversion Process Works
1️⃣ Disassembly – Removal of factory barrel and components
2️⃣ Install Ronin Arms 6.75” Barrel & Katana Suppressor System – Precision-fitted by experts
3️⃣ Integration of SD Components – Cocking tube, shroud, locking piece, and sealing ring
4️⃣ TIG Welding for Structural Strength – All critical points reinforced
5️⃣ HK Factory Black Finish – Professional, corrosion-resistant coating
6️⃣ Live-Fire Testing & QC – Every build tested before shipping
Technical Specifications (Copy-Friendly)
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Suppressor: 12” Katana Titanium (Integrally Suppressed)
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Barrel Length: 6.75” Ronin Arms Ported Barrel
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Locking Piece: 120° HK Spec
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Estimated Service Life: 500,000 rounds
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Maintenance: Ultrasonic cleaner compatible
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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
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Estimated Build Time: 3–5 months
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ATF Form 3 Transfer: Required for suppressor (wait times vary)
⚠ Status calls will NOT speed up processing
🚫 Refund & Cancellation Policy
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No refunds after suppressor Form 3 transfer
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All cancellations incur a 20% restocking fee
✅ Why Choose Ronin Arms?
✔ Specialists in Integrally Suppressed Platforms – MP5, AP5, MPX, and more
✔ Precision Hand-Fitting – No shortcuts, no mass production
✔ Titanium Suppressor Technology for Ultimate Performance
✔ Live-Fire Tested for reliability before shipment
🔥 Key Benefits
✔ Ultra-Quiet Suppression – True SD performance
✔ Perfect Handling – Balanced, authentic feel
✔ Reduced Recoil & Smooth Cycling
✔ Enhanced Resale Value – Adds significant collector appeal
✔ Built to Last – TIG-welded reinforcements and premium components
✅ Order Your AP5-SD Conversion Now
Ronin Arms conversions are limited-production builds to maintain exceptional quality. Don’t miss your chance to own the most advanced full-size AP5-SD integrally suppressed system on the market.
🚀 Experience unmatched suppression.
👉 Click “Add to Cart” now and secure your build today!
📩 Questions? Contact info@roninarmsaz.com
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Ryan S –
Being one of the more expensive conversions, I had some high expectations, and Ronin Arms surpassed them. I’ve watched/read several reviews of conversions from other companies and saw things like the a few supersonic cracks from 115s, leaving the standard cocking tube, no refinish, etc. The work and attention put into my gun was well worth the wait and price. They gave attention to the small details like lining the cocking tube up perfectly, clean welds on the SD cage to spec. As far as the actual shooting, this is the quietest, smoothest MP5 I’ve shot. I ran 300 rounds of 115gr with no issues, and thanks to their unique porting, it’s not filthy at all. Highly recommend.