CMMG Mk4 PDW Complete Lower – Ambi Controls, B5 Grip, Patented Buffer System

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Description

This CMMG Mk4 PDW complete lower receiver is built for compact performance and top-tier control. Outfitted with the CMMG Zeroed line of components, it includes a drop-in trigger, ambidextrous safety selector, bolt catch, and mag release – all engineered for reliability and ease of use in any setup.

The B5 grip offers comfortable ergonomics for sustained handling, while the patented PDW stock delivers a compact footprint with full functionality. This system is compatible with any mil-spec bolt carrier group and is optimized for both traditional and CMMG’s Radial Delayed Blowback platforms without needing additional components.

Perfect for anyone building a premium AR pistol or SBR-style platform, this lower is ready to pair with your upper for high-performance duty, range, or tactical use.

Specifications:

Specification	Detail
Brand	CMMG
Model	Mk4 PDW Complete Lower
Grip	B5 Systems
Trigger	CMMG Zeroed Drop-In
Safety Selector	CMMG Zeroed Ambidextrous
Bolt Catch	CMMG Zeroed
Mag Release	CMMG Zeroed Ambidextrous
Takedown Pins	Heavy-Duty
Buffer System	Patented CMMG PDW Compatible System
BCG Compatibility	Mil-spec & Radial Delayed Blowback
Stock	2-rod PDW Collapsible Stock
Finish	Hardcoat Anodized
MSRP	$899.95