RUGER® MARK IV™
The Maxim Defense MKIV-SD isn’t just another suppressed Ruger® Mark IV™—it’s a leap forward in suppressed firearm technology. Powered by M-Kore™ Technology, this platform delivers unmatched precision, quiet operation, and reliability. Inspired by the iconic MP5SD, the MKIV-SD features a diffuser and ported barrel that bleed gas to reduce supersonic rounds to subsonic speeds, making it one of the quietest and most versatile suppressor systems available.
Its innovative 3-piece design includes integrated carbon cutters for effortless maintenance, while the user-serviceable suppressor ensures long-term durability and convenience. Built for seamless performance, the MKIV-SD eliminates detectable first-round pop and is available in three configurations: without an optic, or equipped with the Leupold DeltaPoint Pro® or Vortex Defender-ST™ red dot optics. Each option enhances the shooting experience, ensuring maximum performance for tactical professionals and enthusiasts alike.
| Calibers : |
.22LR
|
| Mount : |
N/A - Integral
|
| Outer Diameter : |
1.0" (Suppressor)
|
| Material Composition : |
7076-T6 aluminum, 4140 stainless steel
|
| Weight: |
6.3 oz
|
| Length : |
12.6" overall
|
| Finish : |
Cerakote®, Type III hard coat anodizing
|
AVAILABLE OPTICS
| Features | Leupold DeltaPoint Pro® | Vortex Defender-ST™ |
| Magnification: |
1x
|
1x
|
| Dot Size: |
2.5 MOA
|
3 MOA
|
| Battery Life: |
Up to 1,600 hours
|
Up to 9,500 hours
|
| Material: |
Aircraft-grade aluminum
|
Aluminum housing
|
| Weight: |
1.9 oz
|
0.95 oz
|
| Waterproof: |
Yes, waterproof and fog-proof
|
Waterproof
|
| Mounting: |
Glock MOS, Picatinny
|
Glock MOS, Picatinny
|
At Maxim Defense, we take pride in designing and manufacturing high-performance firearms, suppressors and accessories that deliver exceptional reliability and durability. Your feedback and positive reviews are important to us, as they help us continually improve our products. If you experience any issues with your Maxim Defense products, please contact us at info@maximdefense.com, and we’ll work with you to resolve the matter as quickly as possible. Please note that we do not cover damage caused by the installation of other manufacturers’ products.
3 reviews for RUGER MKIV-SD INTEGRAL SUPPRESSOR
| Weight | 4 lbs |
|---|---|
| Dimensions | 12 × 5 × 3 in |
3 reviews for RUGER MKIV-SD INTEGRAL SUPPRESSOR
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Great products
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I recently purchased one of Maxim Defences – Ruger Mark IV 22/45 – SD Integral Suppressor pistols in urban gray. I topped it with an Eotech mini – Eflex red dot. It is my favorite gun and I am considering purchasing another one, just to have put away. The machining is done with absolute precision. Unbelievably quiet! The only upgrade I’ve done is a magazine disconnect/deflector from Tandemkross, so I can shoot it in a single shot mode. It came with a base plate from Maxim Defense, it’s incredibly solid for micro or mini red dot optics from: Leupold, Vortex, Holosun & Eotech. Super stealthy unit that I
hope Maxim Defence continues to produce. You won’t be disappointed, get one while you can… -
Well made and great fun to shoot.









Joel Lovitz –
Great products
Cliff S –
I recently purchased one of Maxim Defences – Ruger Mark IV 22/45 – SD Integral Suppressor pistols in urban gray. I topped it with an Eotech mini – Eflex red dot. It is my favorite gun and I am considering purchasing another one, just to have put away. The machining is done with absolute precision. Unbelievably quiet! The only upgrade I’ve done is a magazine disconnect/deflector from Tandemkross, so I can shoot it in a single shot mode. It came with a base plate from Maxim Defense, it’s incredibly solid for micro or mini red dot optics from: Leupold, Vortex, Holosun & Eotech. Super stealthy unit that I
hope Maxim Defence continues to produce. You won’t be disappointed, get one while you can…
Jeremy Johnson –
Well made and great fun to shoot.