Maxim Defense Industries MD9 CQB, Short Barreled Rifle, 9MM, 5.5″ Threaded Barrel, Cerakote Finish, Black

Product Description

Maxim Defense MD:9 CQB 9mm SBR — 5.5" — 33-Round — Black

The Maxim Defense MD:9 CQB 9mm 33-Round SBR is the high-capacity configuration of Maxim’s ultra-compact 9mm Short Barrel Rifle — running Glock-compatible 33-round extended magazines for maximum round capacity in a compact CQB platform. 5.5" barrel. Gen. 7 CQB stock. Same SOCOM-grade engineering as the PDX and SDX platforms, applied to the 9mm pistol caliber carbine. Subsonic 9mm with a quality suppressor delivers hearing-safe fire. DLC / Type III hard coat anodized black finish. Military-grade materials. Made in USA. ISO 9001:2015.

MD:9 5.5" vs 5.8": Which to Choose?

Both MD:9 variants use the same CQB stock and run Glock 9mm magazines. The 5.5" model ships with a 33-round extended Glock magazine, giving you maximum capacity in Maxim’s compact package. The 5.8" model ships with a 30-round magazine. Either variant pairs naturally with the Maxim MS-9 9mm suppressor — also available at Western Sport.

Maxim Defense Industries: Purpose-Designed, Duty-Built

Maxim Defense Industries is a Minnesota-based, ISO 9001:2015 certified American firearm manufacturer. Every platform — PDX, SDX, MD:9 — is engineered from military-grade materials and developed alongside the SOCOM PDW solicitation. Maxim Defense builds its firearms from 6Al-4V titanium, 17-4 stainless steel, 7075-T6 and 6061 aluminum. Made in the USA to order.

Frequently Asked Questions

What is an SBR? A Short Barrel Rifle has a rifle barrel under 16″ and is federally regulated under the NFA. BATFE Form 4, background check, $200 NFA tax stamp — now $0 under OBBBA.

How long does NFA approval take? Typically 30–90 days. Western Sport handles all Form 4 paperwork in-house. Call 817-393-4000.

Is the $0 NFA tax stamp permanent? The OBBBA eliminated the $200 NFA tax. Western Sport recommends calling to confirm current status.

Does the MD:9 use standard magazines? The Maxim Defense MD:9 is Glock 9mm magazine compatible — runs the same standard-capacity Glock mags you already own.

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.

Additional information