SOLGW M4 Complete AR-15 Lower Receiver - B5 Furniture - Liberty Fighting Trigger - Aluminum Trigger Guard - Vltor A5 Buffer System
or 4 interest-free payments of $140.00 with 
This item is regulated, therefore your entire order will be shipped to an FFL dealer of your choosing. After you place your order, we will contact you to finalize these details.
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
- Free standard shipping on orders $139+ details
- Backed by the SOLGW Warranty! what it covers
Product description
SOLGW M4 Complete Lower: Vltor A5 Buffer System with Liberty Fighting Trigger
Features
- Complete lower receiver – ready to attach upper and shoot
- Vltor A5 buffer system with A5H2 buffer and Sprinco Green spring
- 9-position Loyal 9 A5 receiver extension for enhanced adjustability
- Liberty Fighting Trigger (LFT) installed
- B5 Systems SOPMOD Bravo stock
- B5 Systems pistol grip
- M16 auto pocket cut for drop-in trigger compatibility
- QD endplate with staked Forward Controls Design castle nut
- Enhanced aluminum trigger guard
- 7075-T6 aluminum construction
- Type III hard coat anodized finish
- Mil-Spec or better components throughout
The Sons of Liberty Gun Works M4 complete lower solves the buffer tuning problem by including the Vltor A5 system, which provides smoother cycling and reduced felt recoil compared to standard carbine buffers through its longer rifle-length design. This lower works exceptionally well for shooters building a precision or duty rifle who want enhanced recoil management and reliability, and for anyone who wants premium components assembled correctly from the factory. What sets the SOLGW lower apart is the A5 buffer system with 9-position extension and A5H2 buffer paired with Sprinco Green spring – this combination reduces bolt carrier bounce and improves reliability across different ammunition types while the Liberty Fighting Trigger provides a clean, crisp break without aftermarket trigger costs.
The M16 auto pocket cut allows installation of drop-in aftermarket triggers, and the staked Forward Controls Design castle nut ensures the receiver extension stays secure under hard use. B5 Systems furniture provides durability and ergonomics proven in professional use.
Specifications
- Brand: Sons of Liberty Gun Works
- Model: M4 Complete AR-15 Lower Receiver
- MPN: M4LOWERLFTA5BRAVO
- Platform: AR-15
- Caliber: Multi
- Construction: 7075-T6 Aluminum
- Finish: Type III Hard Coat Anodized
- Color: Black
- Buffer System: Vltor A5 with A5H2 Buffer and Sprinco Green Spring
- Receiver Extension: 9-Position Loyal 9 A5
- Trigger: Liberty Fighting Trigger
- Stock: B5 Systems SOPMOD Bravo
- Grip: B5 Systems
- Trigger Guard: Enhanced Aluminum
- Endplate: QD with Staked FCD Castle Nut
What’s Included
- 1x Complete lower receiver
- 1x B5 SOPMOD Bravo stock
- 1x B5 pistol grip
- 1x Vltor A5 buffer system with A5H2 buffer and Sprinco Green spring
- Complete lower parts kit with Liberty Fighting Trigger (pre-installed)
Customer reviews
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Questions & Answers
No questions yet. Ask about fit, install or compatibility and our team answers within a business day.
Warranty & returns
Backed by the SOLGW Warranty!
SOLGW Warranty
We are happy to replace or refund your money for any defective firearms or parts, including ar15 barrels, bolt carrier group, lower parts kits, or any m4 accessories or rifles. We are dedicated to providing top-quality products to our customers, however, We do not offer refunds on ammunition.
Returns
Returns are ONLY accepted for merchandise found defective immediately upon receipt. Sons of Liberty Gun Works will provide YOUR CHOICE of a replacement item (pending availability) or full refund AND pay the return shipping cost on all firearms and accessories found defective upon receipt. For your added convenience, SonsOfLibertyGunWorks.com will also arrange for the defective items to be picked up and returned to us by the original shipper.
Contact Details:
- Telephone: 210-852-2859
- Email: Info@SonsofLibertyGW.com
