Available as a Pistol

M4 Complete Lower, A5 Buffer System, CUSTOMIZABLE Rifle or Pistol

Now: $133.18
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Liberty Series Complete Lower

A5 Buffer System

SOPMOD Bravo Stock

Liberty Fighting Trigger

QD End Plate

Choice of Lowers


Lower Receiver: Sons of Liberty Gun Works Forged Lower Receiver 
Material: Made from Mil-Spec 7075-T6 aluminum Cerra Forge forgings
Finish: Mil Spec Hard Coat Anodizing Class III Type 2
Contour is fully machined leaving no flash marks from the forging.
Safe, Fire, and Full Auto Pictograms.
Angry Patriot  Roll Mark

Buffer System: Vltor A5 Buffer System designed to improve reliability while creating a smoother operating cycle.
Receiver Extension: Vltor A5 7 Position Receiver Extension Tube made from 7075-T6 Aluminum
Buffer: Vltor A5 5.3 oz. Buffer
Buffer Spring: Sprinco Green Rifle Length Spring
Receiver end plate: Quick Detach Swivel End Plate with properly staked Castle Nut

Fire Control Group: Sons of LIberty Gun Works Liberty Fighting Trigger 

The SOLGW Bolt Catch and Safety Selector are a Mil-Spec AISI8620 investment casting per the USGI TDP. (not to be confused with MIM parts in the commercial market)

Our Safety and Takedown Pivot Detents are solid hardened Stainless Steel from KNS  Precision Machine.

SOLGW Magazine catch and Takedown Pivot Pins are machine from Mil-Spec AISI8620 per the USGI TDP, heat treated and coated per mil spec.

Our Mag Buttons are made from steel per Mil-Spec versus the aluminum found in the majority of commercially available LPKs on the market.

Grip: B5 Systems Grip - Black or Magpul MOE Grip

Trigger Guard: B5 Systems Composite Trigger Guard

Stock: B5 Systems SOPMOD Bravo - Black

Additional Details


2 Reviews

  • 5
    Great product

    Published by Andrew Gullett on Jul 24th 2019

    You can’t beat this complete lower! B5 with standard parts and LFT, which I’m very happy with. If you want good shit, here it is.

  • 5
    High Quality and Reliable

    Published by Chris on Jan 10th 2018

    I ordered this lower with all standard parts aside from the A5 system. I was very happy to see that the receiver is well machined and all parts are high quality, no cheap stuff. The LFT has a good crisp break, I find it very comparable to the ACT. I had held off on trying the A5 for awhile but I’m glad I did. I’ve paired it with a few different combos of uppers, mags and ammo and have had zero stoppages. Great stuff guys!

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