🔥 Unleash the Ultimate Compact Suppressed Platform – The Ronin Arms MP5SD-K Conversion 🔥

Build Time: 2–4 Months – We Don’t Rush Excellence

Looking to squeeze every ounce of performance, suppression, and badassery out of your firearm? Look no further. Ronin Arms’ MP5SD-K integrally suppressed conversion transforms your full-size MP5 into a compact, whisper-quiet MP5SD-K—built for professionals, collectors, and serious shooters who want the very best in sound suppression and reliability.

This isn’t just a barrel swap. This is a handcrafted, TIG-welded, live-fire tested evolution of the platform—shrunken down without sacrificing function or performance. Built by one gunsmith, one gun at a time, for those who demand precision, discretion, and next-level capability.

🕒 Turnaround Time: 2–4 Months from when we receive your barreled receiver and valid FFL.
📞 Please don’t call or email to rush your order—craftsmanship takes time, and every build is worth the wait.

🔥 Important Compatibility Notice

✔ This conversion is for standard MP5 full-size receivers only
❌ K receivers are NOT compatible with this conversion
❌ We cannot convert MP5K or MP5K-N style receivers to MP5SD-K configurations

📌 Before ordering, verify your model to ensure compatibility!

🔧 What’s Included in the MP5SD-K Conversion?

Every Ronin Arms MP5SD-K conversion is built to exacting standards using premium materials and expert craftsmanship.

🔹 8” Defcon4 SD Suppressor
Built for extreme performance, the Defcon4 delivers supreme suppression in a compact package—engineered for discretion and reliability without compromise.

🔹 5.75” Ronin Arms MP5SD-K Ported Barrel
Precision ported to reduce standard 115gr and 124gr ammo to subsonic speeds—no need for 147gr. Optimized for suppressed use and flawless cycling.

🔹 SD Barrel Shroud & Standard SD Shroud Cover
Classic MP5SD-K styling, hand-fitted for a tight, seamless fit and durable finish.

🔹 SD Cocking Tube & Cocking Tube Support
Professionally installed to maintain reliable cycling and structural strength.

🔹 High-Temperature Sealing Ring
Maximizes suppressor efficiency, reduces gas blowback, and helps prevent carbon buildup.

🔹 SD Front Sight with Sling Loops
The finishing touch for a true MP5SD-K look—functional and clean with integrated sling points.

🔹 120° SD Locking Piece
Improves cycling under suppression with reduced recoil and smoother action.

🛠️ Step-by-Step Conversion Process

1️⃣ Disassembly – Removal of the factory barrel, cocking tube, and related components
2️⃣ Installation of 5.75” Ported MP5SD-K Barrel – Precision-aligned and hand-fitted
3️⃣ Fitting of SD Barrel Shroud & Cocking Tube – Seamless, secure integration
4️⃣ TIG Welding – Barrel shroud, cocking tube, and front sight are TIG welded for maximum durability
5️⃣ HK Black Factory Finish – Restores the classic MP5SD-K look and adds corrosion protection
6️⃣ Reassembly & Test-Firing – Each build undergoes live-fire testing to ensure flawless function
7️⃣ Final Quality Control – Thorough inspections before your system leaves our shop

🧼 Maintenance & Care

The MP5SD-K is built to run hard with minimal fuss, but a little attention goes a long way:

Routine Cleaning – Clean your firearm regularly based on how often you shoot. Keep the receiver, internals, and action clean for optimal performance.
Keep It Lubed – Ensure the firearm is properly lubricated—this helps prevent wear and ensures smooth cycling.
Do NOT Lube the Suppressor – The suppressor does not require lubrication and should not be oiled or cleaned internally.
Suppressor Service After 40,000 Rounds – When your round count hits 40k, contact us for inspection or service.
Do Not Attempt to Disassemble or Modify – Opening or altering the suppressor will void your warranty.

Have questions about maintenance or need support? We’re just a message away.

📦 Shipping & Transfer Information

✔ Ship ONLY your barreled receiver and bolt carrier group
✔ Include your order receipt – Orders without documentation will be returned
✔ FFL Required at Checkout – We must have your dealer’s FFL to begin work
✔ Flat Rate Return Shipping: $125
✔ Your Original Barrel Will Be Returned
⚠️ Sending extra parts may result in a $50 handling fee and they are not guaranteed to be returned

❓ Frequently Asked Questions (RAQs)

Q: Can I send in an MP5K or MP5K-N for this conversion?
A: No. This conversion is only compatible with full-size MP5 receivers. K receivers cannot be converted to the MP5SD-K platform.

Q: Do I need to clean the suppressor?
A: No. It’s a sealed system that does not require internal maintenance. Just keep the rest of your firearm clean and lubed.

Q: Will my original barrel be returned?
A: Absolutely—your original barrel ships back with your completed MP5SD-K conversion.

Q: Can I ship my complete firearm?
A: Please do not. Only send your barreled receiver and bolt carrier group to avoid delays and extra fees.

Q: What’s the turnaround time?
A: 2–4 months from when we receive your barreled receiver and valid FFL.

📞 Please don’t call or email to rush your order—quality takes time.

📌 Compatible Host Platforms

✔ HK SP5
✔ Century Arms AP5
✔ MAC-MP5

(Full-size receivers only. K models are not compatible.)

🔓 Unlock the Ultimate MP5SD-K Suppressed Performance

Upgrading your MP5 to the MP5SD-K with Ronin Arms is an investment in precision engineering, unmatched reliability, and elite-level suppression.

🚀 Experience industry-leading suppression, flawless cycling, and handcrafted perfection.
💥 Order your MP5SD-K conversion today and feel the difference that comes with true, uncompromising quality.

📩 Questions? Contact us at info@roninarmsaz.com

🔫 Ronin Arms – Precision. Performance. Perfection.

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