Maxim Defense Industries197549342
Maxim Defense Industries Cqb Standard Buffer & Spring$45.64
Availability: In Stock
Current Stock: Out of stock
The Maxim Defense MD-9 CQB is a purpose-built 9mm AR-style rifle engineered for shooters who want modern platform ergonomics in a compact, maneuverable package. Built on Maxim's reputation for innovative AR design, the MD-9 combines a free-floating barrel with a custom handguard that mirrors a monolithic upper receiver platform—giving you precision accuracy and M-Slot compatibility for mounting accessories. At just 20 inches overall with a 5.5-inch barrel, this is a rifle designed for close-quarters work, home defense, or shooters who value a tight turning radius without sacrificing capability.
The MD-9 CQB ships with Maxim's proprietary brace, keeping your platform legal and functional straight out of the box. The 7075 aluminum and tool steel construction, finished in nitride and Type III hard anodize, stands up to duty use while keeping weight down at 6.1 pounds—light enough to move all day, stiff enough to shoot. Thread pitch is 1/2-28, so you can run suppressors and brakes from a deep aftermarket pool. The free-floating barrel minimizes harmonic vibration, a real asset when you're running this caliber and want consistent performance.
Magazine compatibility matters when you're building a 9mm rifle, and the MD-9 runs standard Glock mags—meaning ammunition and magazines are everywhere you hunt or train. That 31-round capacity gives you serious firepower in a compact form factor. Whether you're a competition shooter exploring AR-9 platforms, a home defender, or an overlander who wants a multi-role rifle, the MD-9 CQB delivers Maxim's engineering in a configuration built for real-world use.
| Caliber | 9mm |
| Barrel Length | 5.5 inches |
| Overall Length | 20 inches |
| Weight | 6.1 pounds |
| Thread Pitch | 1/2-28 |
| Material | 7075 Aluminum and tool steel |
| Finish | Nitride and Type III hard anodize |
| Stock/Brace | CQB brace |
| Magazine Compatibility | Standard Glock magazines (31-round included) |
The MD-9 runs standard Glock magazines. A 31-round magazine is included with the rifle, and Glock mag compatibility means you have endless options in the market for spare ammunition and magazines.
Yes. The MD-9 has a 1/2-28 thread pitch, which is the standard for most 9mm suppressors and muzzle devices on the market today.
The MD-9 CQB has a 5.5-inch barrel and an overall length of 20 inches, making it compact and maneuverable for close-quarters use, home defense, and shooters who prioritize a tight platform.
Yes, the MD-9 CQB ships with Maxim Defense's proprietary CQB brace included.
SKU: 198466853 • Weight: 10oz
Availability: In Stock
Current Stock: Out of stock
The Maxim Defense MD-9 CQB is a purpose-built 9mm AR-style rifle engineered for shooters who want modern platform ergonomics in a compact, maneuverable package. Built on Maxim's reputation for innovative AR design, the MD-9 combines a free-floating barrel with a custom handguard that mirrors a monolithic upper receiver platform—giving you precision accuracy and M-Slot compatibility for mounting accessories. At just 20 inches overall with a 5.5-inch barrel, this is a rifle designed for close-quarters work, home defense, or shooters who value a tight turning radius without sacrificing capability.
The MD-9 CQB ships with Maxim's proprietary brace, keeping your platform legal and functional straight out of the box. The 7075 aluminum and tool steel construction, finished in nitride and Type III hard anodize, stands up to duty use while keeping weight down at 6.1 pounds—light enough to move all day, stiff enough to shoot. Thread pitch is 1/2-28, so you can run suppressors and brakes from a deep aftermarket pool. The free-floating barrel minimizes harmonic vibration, a real asset when you're running this caliber and want consistent performance.
Magazine compatibility matters when you're building a 9mm rifle, and the MD-9 runs standard Glock mags—meaning ammunition and magazines are everywhere you hunt or train. That 31-round capacity gives you serious firepower in a compact form factor. Whether you're a competition shooter exploring AR-9 platforms, a home defender, or an overlander who wants a multi-role rifle, the MD-9 CQB delivers Maxim's engineering in a configuration built for real-world use.
| Caliber | 9mm |
| Barrel Length | 5.5 inches |
| Overall Length | 20 inches |
| Weight | 6.1 pounds |
| Thread Pitch | 1/2-28 |
| Material | 7075 Aluminum and tool steel |
| Finish | Nitride and Type III hard anodize |
| Stock/Brace | CQB brace |
| Magazine Compatibility | Standard Glock magazines (31-round included) |
The MD-9 runs standard Glock magazines. A 31-round magazine is included with the rifle, and Glock mag compatibility means you have endless options in the market for spare ammunition and magazines.
Yes. The MD-9 has a 1/2-28 thread pitch, which is the standard for most 9mm suppressors and muzzle devices on the market today.
The MD-9 CQB has a 5.5-inch barrel and an overall length of 20 inches, making it compact and maneuverable for close-quarters use, home defense, and shooters who prioritize a tight platform.
Yes, the MD-9 CQB ships with Maxim Defense's proprietary CQB brace included.
SKU: 198466853 • Weight: 10oz