The compact 9mm AR platform has become a staple for close-quarters work, home defense, and fast-handling range rigs. A well-engineered AR-9 balances controllability, modularity, and suppressed or unsuppressed performance in tight spaces while retaining magazine compatibility and accessory options that operators expect.
MAXIM DEFENSE CPS MD9 is built around those principles. Shop this product 
Design and build quality
The MAXIM DEFENSE CPS MD9 features a 5.5″ threaded CMV barrel finished with nitride and fitted with a flash hider, providing a short, robust muzzle package ready for suppressor mounts or quick-transition CQB work. Its anodized 7075-T6 receiver adds weight savings and strength expected from high-end platforms, while the free-floating M-Rax/M-Lok compatible handguard creates a monolithic-like upper to improve accessory mounting and barrel harmonics.
HWK XL 5.56 Giveaway
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A third-party retailer is currently hosting a giveaway for an HWK XL 5.56 pistol package (≈ $1,800 retail value).
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Controls and compatibility
Ambidextrous mag release and a CQB pistol system layout make the MD9 intuitive for rapid reloads and close-range manipulation. The rifle is chambered in 9mm Luger — a caliber prized for magazine capacity, economical training rounds, and manageable recoil in compact platforms. The MD9 accepts Glock G19 and longer 9mm magazines, simplifying logistics for users who already run Glock-compatible magazines.
With a price of $1744.99, the MD9 positions itself as a premium AR-9 option that focuses on material quality and feature set rather than cut-rate components. View product details
Performance and applications
On the range the short CMV nitride barrel and flash hider offer crisp follow-up shots and consistent feeding from Glock-pattern magazines. The free-floating handguard and robust receiver help maintain point-of-impact under sustained strings, while the ambidextrous controls support bilateral shooting and tactical reloads. The MD9’s architecture is well-suited for competitive PCC divisions, personal defense, and training environments where 9mm logistics are preferred.
Why the MD9 stands out
Maxim Defense’s reputation for precision machining and thoughtful ergonomics is evident in the MD9’s combination of a 7075-T6 receiver, nitride-treated CMV barrel, and M-Rax/M-Lok handguard. For users seeking a factory-built AR-9 that accepts common Glock G19 magazines and offers a CQB-ready footprint, the MAXIM DEFENSE CPS MD9 is a compelling choice.
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People Also Ask
What makes this product stand out from competitors?
This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.
Is this product suitable for beginners?
Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.
What warranty or support is available?
The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.
How does this compare to similar products in its price range?
This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.
What maintenance is required?
Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.
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