Maxim Defense Industries - High-Performance Firearms & Accessories

MDX CQB LOWER RECEIVER WITH GEN:7 CQB STOCK

A COMPACT POWERHOUSE.

For those operating in environments where every inch matters, the Maxim Defense MDX CQB Stock Lower Receiver with the GEN:7 CQB Stock delivers unmatched compact performance. Built from 7075 billet aluminum and hard coat anodized, it’s ready for the harshest conditions.

Equipped with the Maxim Defense GEN:7 CQB Stock and CQB Standard Buffer System, it collapses to 5.3” for tight maneuverability and extends to 10” for maximum control. The ALG Combat Trigger, Radian selector, ambidextrous magazine release, and Maxim grip make this lower an exceptional choice for any short or full length rifle build. Match it with our MDX508 Upper Receiver, MDX510 Upper Receiver, or PDX™ Upper Receiver for a precision-engineered, compact powerhouse.

*Also available in GEN:6 CQB Pistol Brace and B5 BRAVO configurations.

KEY FEATURES

  • Multi-Caliber MDX 7075 Billet lower
    Precision-machined from 7075 billet aluminum for unmatched strength and rigidity while keeping weight to a minimum. Designed as a true multi-cal platform, it provides maximum compatibility with a wide range of AR15 uppers.

  • ALG Combat Trigger
    Outfitted with the proven ALG Combat Trigger, offering a crisp, consistent pull and reliable reset. Perfect for shooters demanding both speed and accuracy.

  • Radian Selector
    Features the premium Radian ambidextrous safety selector, engineered for smooth engagement and positive feedback. Built for high-stress environments where reliability matters most.

  • Ambidextrous Magazine Release
    Provides full ambidextrous control for quick reloads from either hand. Enhances adaptability and confidence in tactical or competitive settings.

  • Maxim Grip
    Ergonomically designed to maximize comfort and control during extended shooting sessions. The textured surface ensures a secure grip even in adverse conditions.

  • Maxim Defense GEN:7 CQB Stock
    Outfitted with the GEN:7 CQB Stock, designed for unmatched portability,  stability and control. Ideal for close-quarters battle where every inch matters.

PRODUCT SPECS

MDX CQB Lower Receiver – w/ GEN:7 CQB Stock
Compatibility: Multi-Cal /  Mil-Spec AR-15
Weight: 2lbs 8oz
Collapsed Length: 13.12 inches
Extended Length: 17.62 inches
Buffer System: CQB - Standard
Material Composition: 7075 Billet Aluminum
Finish: Hard Coat Anodized

*IMPORTANT: This product must ship to registered FFL

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.

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Color

Arid, Black, Urban Grey

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