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U.S. Arms Standard Lower Receiver

Stripped lower receiver. Includes trigger guard.

ATF regulated items have restrictions and requirements:

  • Your order will ship only to a Federal Firearms License holder.
  • We are not currently shipping to CA, CT, DC, HI, MD, MA, MN, NJ, NY, or VA.
  • Please be sure to contact your local FFL dealer prior to placing your order to ensure they are still accepting transfers. Some FFL dealers are not open due to Covid-19.
  • Customer must read, understand, and agree to customer terms and conditions.



U.S. Arms AR-15 lower receivers are among the most lightweight and durable on the market. This billet AR-15  Standard Lower Receiver is no exception. This receiver was engineered to allow significant weight reduction without sacrificing strength. The result of our strong attention to detail during the machining and manufacturing process is a lower receiver that is truly like no other. This AR-15 lower truly has it all; great looks, dependability, accuracy, and is lightweight.

The U.S. Arms Standard Lower Receiver is the perfect base for your AR platform if you’re looking to build a beautiful, lightweight AR-15. This lower receiver is great for the first-time AR owner looking to get a better understanding of their firearm or for the seasoned enthusiast looking to add another custom AR-15 to the arsenal.

The U.S. Arms Standard Lower Receiver comes equipped with an oversized trigger guard to allow extra space for a glove. The high quality anodized finish of this receiver allows for corrosion resistance, easy upkeep, and fade resistance to ensure your AR is operational for years to come.

Compatible with all Mil-Spec upper receiver groups for:

  • AR-15
  • M-16 A1A2
  • M4



Anodized Black

Product Benefits

Same high quality as our Cam-Lock lower receiver.

Details and Build Materials

All U.S. Arms lower receivers are machined from a single billet of 7075 aircraft grade aluminum for added strength and durability.