Ronin Arms MP5SD Integrally Suppressed Conversion

Build Time: 2–4 Months | Hand-Built Precision | Made in the USA

Transform your full-size MP5 into a true MP5SD with modern Ronin Arms engineering.
This is not a cosmetic upgrade or a sleeve-style suppressor. This is a true integrally suppressed MP5SD conversion, built to factory-correct standards and refined with modern materials and precision craftsmanship.

🔥 The Ultimate MP5SD Conversion — Built the Right Way

The HK MP5 is legendary. But when it comes to true suppression, smooth recoil, and reliable subsonic performance, the MP5SD configuration stands alone.

Ronin Arms’ MP5SD Integrally Suppressed Conversion transforms your standard full-size MP5 into a precision-engineered SD system, featuring a titanium integral suppressor, optimized ported barrel, and authentic SD architecture — all built under our One Gun. One Gunsmith. philosophy.

Every MP5SD conversion is:

Hand-built in the USA
TIG-welded at all critical stress points
Live-fire tested for function and suppression
Final-inspected before release

This is a professional-grade MP5SD conversion trusted by collectors, professionals, and serious enthusiasts.

✅ Why Choose Ronin Arms for Your MP5SD Conversion?

When you choose Ronin Arms, you’re investing in true SD performance, not shortcuts.

✔ Factory-correct MP5SD design with modern engineering enhancements
✔ Titanium integral suppressor technology
✔ Smooth, predictable recoil impulse
✔ Reliable cycling with standard ammunition
✔ Precision craftsmanship backed by real testing — not marketing claims

❗ MP5SD Compatibility — READ BEFORE ORDERING

Ronin Arms SD conversions are compatible with full-size MP5 receivers and full-size MP5 clones, including:

HK MP5 (Full Size) — MP5, MP5-N, MP5-F
HK SP5
AP5 (Full Size) — AP5, AP5 Core
Zenith (Full Size) — ZF-5 Series
MKE Full-Size Models — Z-5RS, Z-43, etc.
PTR Full-Size Models — 9R, 9CT, 9C/Classic, 9FR
POF MP5 (Full Size)
Dakota Tactical Full-Size Builds — D54 Series
Other Full-Size Builders — TPM, Brethren, RDTS, Omega (non-K)

General Rule: If it is a full-length MP5 receiver (not a K-model), it is compatible.

Not Compatible — K-Receivers & Variants

The following platforms cannot be converted to an SD system:

HK MP5K / MP5K-N
HK SP89 / SP5K
AP5-P, AP5-M
PTR 9KT / all K variants
Zenith ZF-5P / Z-5P / Z-5K
POF MP5K variants
All PDW, Micro, K, or K-N receivers

🔧 What’s Included in the Ronin Arms MP5SD Conversion

🗡️ 12” Katana Titanium Integral Suppressor (NEW for 2025)

Designed specifically for Ronin Arms SD platforms.

✔ Aerospace-grade titanium construction
✔ Elite-level sound suppression under real-world conditions
✔ Estimated service life: 40,000–50,000 rounds
✔ Maintenance-free design (ultrasonic compatible)
✔ Balanced for full-size MP5 builds

🔩 6.75” Ronin Arms MP5SD Ported Barrel

Engineered to deliver true SD performance without specialty ammunition.

✔ Precision porting reduces standard 115gr and 124gr ammunition to subsonic velocities
✔ Eliminates the need for heavy subsonic loads
✔ Professionally installed and head-spaced
✔ Optimized for reliability, accuracy, and longevity

⚙️ Additional Authentic SD Components

SD barrel shroud & cover — correct MP5SD profile
SD cocking tube & support — TIG-welded for strength
High-temperature sealing ring — improved efficiency and reduced fouling
120° SD locking piece — smooth recoil impulse
SD front sight with sling loops — functional and historically correct

⚠️ Ammunition Requirements (IMPORTANT — READ CAREFULLY)

The Ronin Arms MP5SD system is engineered around standard-pressure ammunition. Using unsupported ammunition types will result in poor performance and excessive fouling.

✅ Approved Ammunition

115gr 9mm ball
124gr 9mm ball

These loads are intentionally slowed by the SD ported barrel to achieve consistent subsonic performance.

❌ Ammunition NOT Supported

Do NOT use the following ammunition types:

❌ 147gr ammunition or heavier
❌ Synthetic, polymer, or frangible projectiles
❌ Coated or plated bullets
❌ Subsonic-labeled ammunition
❌ Reloads or non-SAAMI-spec ammo

📌 Heavier projectiles provide no benefit in an SD system
📌 Synthetic and coated rounds dramatically increase fouling
📌 Improper ammunition can cause cycling issues and accelerated wear

Failure to follow these ammunition guidelines may result in reliability issues and is not covered under warranty.

🛠 MP5SD Conversion Process

1️⃣ Complete disassembly and inspection
2️⃣ Removal of factory barrel
3️⃣ Installation of 6.75” Ronin Arms ported SD barrel
4️⃣ Integration of SD components (cocking tube, shroud, front sight)
5️⃣ TIG welding at all structural points
6️⃣ HK factory black finish
7️⃣ Live-fire testing for function and suppression
8️⃣ Final QC inspection before shipment

📐 Technical Specifications

Suppressor: 12” Katana Titanium (integral)
Barrel Length: 6.75” Ronin Arms Ported SD Barrel
Locking Piece: 120° SD spec
Estimated Suppressor Life: 40,000–50,000 rounds
Maintenance: Factory rebuild available
Finish: HK Factory Black

📦 Shipping & ATF Transfer Information

✔ Ship ONLY your barreled receiver and bolt carrier group
✔ Printed order receipt required
✔ Suppressor transferred via ATF Form 3 to your FFL/SOT
✔ Original barrel returned with completed conversion

🚫 Do NOT send extra parts (stocks, trigger packs, optics)
⚠ $50 handling fee applies; return not guaranteed

⏳ Build Time & ATF Notes

Estimated Build Time: 2–4 months
ATF processing times are outside our control
⚠ Status calls do not accelerate the process

🔐 Refund & Cancellation Policy — ALL SALES FINAL

All Ronin Arms products are custom-built or custom-fit to order.

❌ No cancellations, returns, or refunds
❌ NFA items and conversion services are non-refundable

Each order is scheduled immediately and parts are allocated upon purchase.
Please confirm compatibility and ammunition requirements before checkout.