SOLGW M4 Complete Lower Receiver - B5 Furniture - VLTOR A5 Buffer System

SOLGW M4 Complete Lower Receiver - B5 Furniture - VLTOR A5 Buffer System

Experience the uncompromising craftsmanship of the Sons of Liberty Gun Works M4 Complete Lower Receiver—engineered for shooters who demand reliability, durability, and performance straight out of the box. Chambered for 223 Remington/5.56 NATO, this semi-automatic lower is built around the rugged Rebellious Angry Patriot lower and features a 9-position Loyal 9 A5 receiver extension for enhanced modularity and control.

Constructed from 7075-T6 aluminum and finished with a Type III hard coat anodizing, this lower is designed to endure hard use in any environment. From the Liberty Fighting Trigger to the Vltor A5 buffer system with A5H2 and Sprinco Green Spring, every component reflects SOLGW’s commitment to Mil-Spec or better standards. Outfitted with B5 Systems Bravo stock and BCM B5 grip, it delivers ergonomic comfort and tactical readiness. Whether you're building a duty rifle or upgrading your setup, the SOLGW M4 Lower is the foundation you can trust.

7075-T6 Aluminum Construction
Provides unmatched strength and durability for demanding use.

Hard Coat Type III Anodized Finish
Black finish resists wear, corrosion, and harsh conditions.

B5 Systems Bravo Stock & BCM B5 Grip
Ergonomic and mission-ready for superior handling.

Liberty Fighting Trigger
Crisp, reliable trigger pull for enhanced accuracy.

Aluminum Enhanced Trigger Guard
Improves comfort and accessibility with gloves.

QD Endplate with FCD Castle Nut
Staked for security, ready for sling integration.

Vltor A5 Buffer System
Includes A5H2 buffer and Sprinco Green Spring for smoother recoil and reliability.

Loyal 9 A5 Receiver Extension
9-position adjustability for optimal fit and control.

Specifications

• Material: 7075-T6 Aluminum
• Finish: Hard Coat Type III Anodized (Black)
• Trigger: Liberty Fighting Trigger
• Trigger Guard: Aluminum Enhanced
• Stock: B5 Bravo SOPMOD
• Grip: BCM B5
• Buffer System: Vltor A5 with A5H2 Buffer
• Spring: Sprinco Green Rifle Spring
• Receiver Extension: Loyal 9 A5, 9-Position
• Endplate: QD with FCD Castle Nut (Staked)
• Selector Markings: Safe, Fire, Full Auto Pictograms
• Compatibility: AR-15 Upper Receivers
• Country of Origin: USA