Upgrade Your AP5-SD with Ronin Arms’ Ultimate Integrally Suppressed Conversion

Build Time: 3-5 Months

The Century Arms AP5-SD is already a reliable, high-performance firearm—but if you’re looking for the ultimate suppressed shooting experience, Ronin Arms delivers with our integrally suppressed AP5-SD full-size conversion. Engineered for maximum suppression, flawless cycling, and superior craftsmanship, this conversion transforms your AP5-SD into an elite, whisper-quiet system.

This exclusive SD conversion enhances your AP5-SD with precision-machined components, advanced suppression technology, and expert craftsmanship, ensuring stealth, control, and peak performance.

🔥Important Compatibility Notice 🔥
✔ This conversion is only for the AP5-SD model
❌ The AP5 and AP5-P models are NOT compatible with this conversion.
❌ AP5-P (K receiver guns) cannot be converted to an SD platform.

📌Before ordering, verify your model to ensure compatibility!

What’s Included in the AP5-SD Full-Size Conversion?

Every Ronin Arms AP5-SD full-size conversion is crafted using premium components to deliver industry-leading suppression, reliability, and durability.

🔹 12” Defcon4 SD Suppressor

The heart of this conversion, our integrally suppressed system delivers superior sound suppression, minimal first-round pop, and seamless integration, ensuring a truly whisper-quiet and high-performance firearm.

🔹 6.75” Ronin Arms Ported SD Barrel

Engineered for perfect gas regulation, this precision-machined, ported barrel ensures optimal subsonic performance—especially with 115gr and 124gr ammo. Barrel is professionally installed and head-spaced for reliable, accurate operation.

🔹 SD Cocking Tube & Cocking Tube Support

Designed for smooth cycling, long-term reliability, and enhanced durability, ensuring flawless suppressed operation.

🔹 120° SD Locking Piece

The AP5SD comes with a 120° locking piece, perfect for the SD system. It helps reduce recoil, improve cycling, and keeps your setup running smoothly.

🔹 High-Temperature Sealing Ring

Creates a gas-tight seal, reducing carbon buildup while improving suppressor efficiency and longevity.

🔹Reinforced for Strength & Longevity

Reinforcement welds are added to the rear of the barrel shroud to ensure durability and long-term reliability. We saw the unsupported barrel shroud as a weakness in the platform—and we fixed it.

✅ Includes: Defcon4 Suppressor, all required SD components, and expert installation.

How the AP5-SD Full-Size Conversion Process Works

Upgrading your Century Arms AP5-SD with Ronin Arms is a detailed, precision-engineered process requiring expert craftsmanship. Here’s how we transform your firearm into a top-tier integrally suppressed system:

🔧Step-by-Step Conversion Process

1️⃣ Disassembly – We carefully remove your factory barrel, cocking tube, and outdated components.
2️⃣ Installation of Ronin Arms 6.75” Ported SD Barrel – Precision-fitted for optimal suppression and flawless cycling.
3️⃣ SD Barrel Shroud & Cocking Tube Installation – Hand-fitted for seamless, secure integration.
4️⃣ TIG Welding for Maximum Durability – Barrel shroud, cocking tube, and front sight assembly are welded for structural integrity and longevity.
5️⃣ HK Black Factory Finish Application – Restores the classic SD look while providing corrosion resistance.
6️⃣ Reassembly & Test-Firing – Every AP5-SD conversion undergoes comprehensive live-fire testing for flawless performance.
7️⃣ Final Quality Control Check – Our experts conduct extensive inspections to ensure the build meets our highest standards.

Why Choose Ronin Arms for Your AP5-SD Conversion?

At Ronin Arms, we lead the industry in integrally suppressed firearm conversions. Here’s why firearm enthusiasts trust us:

✔ Unrivaled Expertise – Specialists in integrally suppressed MP5 and AP5 platforms.
✔ Precision Craftsmanship – Every build is hand-fitted and fine-tuned for perfection.
✔ High-Quality Components – We use only the best materials, built for longevity and performance.
✔ Rigorous Live-Fire Testing – Every conversion is tested to ensure flawless function and sound suppression.
✔ Customer Satisfaction Guaranteed – We provide exceptional service and support from start to finish.

🔥 The Benefits of the AP5-SD Full-Size Conversion 🔥

✔ Industry-Leading Sound Suppression – Dramatically reduces noise signature for a true suppressed shooting experience.
✔ Superior Handling & Performance – Designed for tactical operations, home defense, and professional use.
✔ Reduced Recoil & Smooth Cycling – Experience softer shooting and improved control.
✔ Increased Resale Value – A fully converted AP5-SD holds significant market value.
✔ Trusted by Professionals & Enthusiasts – Operators, law enforcement, and firearm collectors trust Ronin Arms for top-tier suppressed solutions.

📦AP5-SD Shipping & Transfer Information

✔ Ship ONLY the barreled receiver and bolt carrier group
• Additional parts may incur a $50 handling fee and are not guaranteed to be returned

✔ Include your order receipt
• Orders without a receipt will be returned

✔ We will process a Form 3
• Your suppressor will be transferred to your FFL once approved

✔ We will return your original barrel
• It will be shipped back with your completed barreled receiver

⏳ Build Time: 3–5 Months
• Quality takes time — we don’t cut corners or rush craftsmanship

⚠️ We do NOT control ATF wait times
• Please be patient — calling for updates will not speed up the process and may delay your place in line

📬Shipping Address & Instructions
• You will receive all necessary info at the time of purchase
• Be sure to check your paid receipt for details

🚫Refund & Cancellation Policy
• No refunds will be issued once the suppressor has been Form 3’d
• All cancellations are subject to a 20% restocking fee

🔫 Unlock the Ultimate AP5-SD Suppressed Performance

Upgrading your AP5-SD with Ronin Arms’ Integrally Suppressed Conversion is an investment in precision, reliability, and cutting-edge suppression technology.

🚀Experience industry-leading suppression, flawless cycling, and expert craftsmanship.
💥Order your AP5-SD full-size conversion today and join the Ronin Family!

📩Questions? Contact us at info@roninarmsaz.com

🔥Join the Ronin Family! 🔥
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🔫Ronin Arms – Precision. Performance. Perfection.