Ronin Arms™ MP5K SD Conversions – Integrally Suppressed K Platform

Conversion Time: 6–10 Weeks | Hand-Built Precision | Made in the USA

⚠️ NOT FOR FULL-SIZE MP5 RECEIVERS – READ BEFORE ORDERING

This conversion is STRICTLY for MP5K variant (K-length) receivers only.

❌ DO NOT purchase this conversion if you have a full-size MP5

Full-size MP5 platforms require our MP5 to MP5SD Conversion, which is a different system.

✔ MP5K / SP5K / AP5-P / PTR 9KT → Correct product
❌ MP5 / SP5 / AP5 / PTR 9CT → Incorrect product

Please confirm your platform before purchasing.

⚠️ IMPORTANT – THIS IS FOR ALL MP5K VARIANT RECEIVERS

If you have a K variant MP5 platform, this is the conversion you need.

✔ HK MP5K / MP5K-N
✔ HK SP5K / SP89
✔ Century Arms AP5-P / AP5-M
✔ PTR 9KT
✔ Zenith ZF-5P / Z-5P / Z-5K
✔ POF MP5K variants
✔ Dakota Tactical D54K variants
✔ Omega / TPM / RDTS / Brethren K builds
✔ Other MP5K pattern clones (non-monolithic)

📌 If it is a K-length receiver—this is the correct conversion.

⚠️ IMPORTANT CONVERSION INFORMATION

This is a full MP5K SD conversion service.

You will send in your MP5K upper receiver, and we convert it into a true integrally suppressed MP5K SD system.

Due to the design of the K platform, these conversions require:

✔ Structural modification
✔ Component grafting
✔ Additional system integration

Your platform is hand built, fit, grafted, and tested by one gunsmith.

🔥 MP5K SD Conversion – Compact SD Performance, Done Right

The MP5SD platform is legendary for a reason—exceptional suppression, smooth recoil impulse, and unmatched shootability.

The Ronin Arms™ MP5K SD Conversion brings that same performance to the K platform.

This is a true system transformation, not a basic modification.

Every conversion is completed under our core philosophy:

“Accept No Imitations. One Gun. One Gunsmith.”

✔ No shortcuts
✔ No drop-in kits
✔ No universal solutions

🔊 Why Choose Ronin Arms™ for Your MP5K SD Conversion?

✔ True MP5K Integrally Suppressed System
✔ MP5SD Ported Barrel Technology
✔ Titanium suppressor engineered for SD performance
✔ Hand built, fit, and tested
✔ Engineered specifically for K platforms—not adapted

🛠 What Makes MP5K Conversions Different

The MP5K platform requires additional engineering and fabrication to properly run an SD system.

✔ Components must be grafted into the receiver structure
✔ System must be re-engineered for proper function
✔ Additional tuning and alignment is required

This makes MP5K conversions:

✔ More complex
✔ More labor intensive
✔ More time consuming

We do not shortcut this process—because performance depends on doing it right.

🛠 What Your MP5K SD Conversion Includes

✔ 5.75″ MP5SD Ported Barrel (K Configuration)

✔ Precision ported for SD performance
✔ Allows 115gr and 124gr ammunition to run subsonic
✔ Eliminates the need for subsonic ammunition
✔ Optimized for reliability and accuracy

✔  8″Wakizashi Titanium SD Suppressor

✔ Grade 5 Titanium (6AL-4V)
✔ Approx. 8” length | Approx. 9.7 oz | 1.65” diameter
✔ Full-auto rated

✔ Designed to run 40–50K rounds before cleaning is needed
✔ Suppression improves as carbon builds
✔ Optimized gas flow for reduced backpressure

✔ System Integration & Tuning

✔ Components are grafted and fully integrated into your platform
✔ System tuned specifically to your receiver
✔ Built as a complete SD system—not separate parts

✔ Locking Piece & System Geometry

✔ Locking piece configuration is platform dependent
✔ Adjusted as needed for proper timing and cycling
✔ Some platforms already have correct geometry

All tuning is completed in-house as part of the full system.

🎯 Finish & Coating

Every conversion is fully refinished before it leaves our shop.

✔ Stripped, prepped, and refinished after all work is completed
✔ Returned in HK Black professional finish
✔ Corrosion-resistant and built for long-term durability

This is not partial work or touch-up.

Your platform is returned complete, uniform, and finished the right way.

🔧 MP5K Conversion Process – No Compromises

✔ Full disassembly and inspection
✔ Structural grafting and modification
✔ Barrel installation and alignment
✔ Suppressor integration and system fitment
✔ Full refinish in HK Black
✔ System tuning and adjustment
✔ Live-fire testing before return

Each conversion is completed by one gunsmith from start to finish.

📦 What You Need to Send In

✔ Upper receiver
✔ Bolt carrier group (recommended)
✔ Printed order receipt

🚫 Do NOT send extra parts (stocks, optics, etc.)

📦 Shipping & ATF Transfer Information

✔ Suppressor shipped to your FFL/SOT
✔ Converted upper returned directly to you
✔ ATF Form 4 completed through your FFL

⏱ Conversion Timeline

• Estimated completion: 6–10 weeks
• Timeline begins once your upper is received and processed

🔐 Refund & Cancellation Policy – ALL SALES FINAL

All conversions are custom-built to order.

❌ No cancellations
❌ No returns
❌ No refunds

Please confirm compatibility before ordering.

🔥 Upgrade Your MP5K the Right Way

This is not a basic upgrade.

This is a true MP5K SD conversion, engineered to bring full SD performance to a compact platform.

If you own a K variant—this is the conversion you need.

“Accept No Imitations. One Gun. One Gunsmith.”™