Sons of Liberty Gun Works M4 Complete Lower with Mil-Spec Buffer System - QD End Plate - SL Furniture

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Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal-Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to



Every firearm enthusiast and dedicated tactical shooter knows a lower receiver is one of the most important components of a firearm, which is why they use a receiver that is of the highest quality. To improve on already quality lower receiver, one needs an A-grade buffer system to go with it. The manufacturing team at Sons of Liberty Gun Works are proud of their superior quality products and believes the M4 Complete Lower Half with Mil-Spec Buffer System is nothing short of that same quality their clients have grown accustomed to using.Â

  • Lower receiver is made from Mil-Spec 7075-T6 aluminum cerra forge forgings
  • Lower receiver finish: anodized Mil-Spec MIL-A-8625F, type III, class 2, hard anodic coating that is non-reflective
  • Contour is fully machined leaving no flash marks from the forging
  • Safe, fire, and full auto pictograms
  • Buffer system: enhanced Mil-Spec
  • Receiver extension: 6 position receiver extension tube made from 7075-T6 aluminum
  • Buffer: H buffer
  • Buffer spring: sprinco blue spring
  • Quick detach receiver end plate

Sons of Liberty Gun Works specializes in high-quality custom MK 10 and M4 rifles that are made only in the USA. They believe that there is no substitute for quality and that your firearm should be correctly built the first time. Sons of Liberty Gun Works pride themselves in manufacturing guns that are ready for hard use the minute they are unpacked out of their box.
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BrandSons of Liberty Gun Works
Caliber MarkingMulti-Caliber
FinishHardcoat Anodized
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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