Home » Shop » Maxim Defense Industries RUGER MKIV-SD Integrally Suppressed, 22LR, 5.9″ Barrel, IV Spprssd 10R
Home » Shop » Maxim Defense Industries RUGER MKIV-SD Integrally Suppressed, 22LR, 5.9″ Barrel, IV Spprssd 10R
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$1,295.00Original price was: $1,295.00.$1,165.50Current price is: $1,165.50.
Out of stock
🚚 Not on our shelf today — order now to reserve yours, or call (817) 393-4000 for a current lead time. Free local pickup in Roanoke, TX when it arrives.
⚠ NFA ITEM — SUPPRESSOR Federally regulated suppressor under the National Firearms Act. BATFE Form 4, background check, $200 NFA tax stamp now $0 under OBBBA. Buyer must be 21+, US citizen, NFA-legal state. Allow 30–90 days. Western Sport handles all paperwork — call 817-393-4000.
Maxim Defense Ruger Mark IV Integrally Suppressed .22 LR Pistol
The Maxim Defense MKIV-SD is an integrally suppressed Ruger Mark IV .22 LR pistol with Maxim’s M-Kore™ Technology. Inspired by the legendary HK MP5SD, the MKIV-SD’s ported barrel and diffuser reduce supersonic ammunition to subsonic speeds — averaging 114 dB with subsonic loads and 123 dB with standard velocity. No first-round pop. Total length: 12.6". 5.95" barrel. 7" x 1" suppressor tube (4130 steel). 3-piece user-serviceable design with carbon cutters. 10-round capacity. Optic-ready. Made in USA.
Spec
Detail
Caliber
.22 LR
Barrel Length
5.95"
Total Length with Suppressor
12.6"
Suppressor Tube
7" x 1.0" diameter — 4130 steel
Sound Level
114 dB avg (subsonic) / 123 dB (CCI Minimag) — MIL-STD-1474D
The Maxim Defense MKIV-SD is one of the quietest semi-automatic pistols commercially available — 114 dB average with Gemtech subsonic ammunition puts it below the threshold of pain. The MP5SD-inspired design ports propellant gas from the barrel into the suppressor body, actively slowing supersonic ammunition to subsonic speeds. At 12.6" total length, the MKIV-SD is virtually no longer than a standard Ruger Mk IV.
Maxim Defense Industries is a Minnesota-based American firearm manufacturer and ISO 9001:2015 certified company. The PDX and SDX platforms were developed directly from the SOCOM PDW solicitation — designed to meet the demands of Tier 1 operators who need maximum lethality in a minimum package. Maxim Defense builds its firearms from military-grade materials: 6Al-4V titanium, 17-4 stainless steel, 7075-T6 and 6061 aluminum. Every firearm is built to order in the USA.
Frequently Asked Questions
What NFA process is required? BATFE Form 4 transfer, background check, $200 tax stamp now $0 under OBBBA. Allow 30–90 days for ATF approval.
What mount does the Maxim suppressor use? Maxim Defense suppressors use the proprietary HUB Mount system — a quick-attach interface requiring a compatible HUB muzzle device on the host.
Are Maxim Defense suppressors full-auto rated? Yes — Maxim Defense suppressors are built from military-grade materials and tested to SOCOM standards.
How to buy NFA at Western Sport? Call 817-393-4000. Roanoke TX FFL/SOT since 2007. Form 4 handled in-house. $0 stamp (OBBBA).
Why Buy From Western Sport?
Western Sport is a licensed FFL/SOT dealer in Roanoke, Texas (North Texas), FFL/SOT since 2007. We specialize in NFA transfers and handle all BATFE Form 4 paperwork in-house — so you get a smooth, guided NFA purchase experience. The $0 NFA tax stamp under OBBBA makes now the best time to buy. Call 817-393-4000 with questions.
This item is out of stock. These are on the shelf today and ship or transfer the same way. Not sure which is the right swap? Call 817-393-4000 and we will tell you straight.
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