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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 lower receivers are among the most lightweight and durable on the market. This Standard Lower Receiver is engineered to allow significant weight reduction without sacrificing strength, is ergonomically accurate, and complements our other rifle products. Attention to machining detail through every step of the manufacturing process assures precision fit parts that are aesthetically appealing and provides highly accurate functioning.

Compatible with all Mil-Spec upper receiver groups for:

  • AR-15
  • M-16 A1A2