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U.S. Arms M-4 UTAW 5.56 Rifle


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.



5.56 NATO


16" medium profile, 1:7 twist, cold hammer forged, chrome lined, nickel boron extension

Muzzle Thread

1 / 2 × 28 threads per inch

Mounting System



6.79 lbs


35.6" – 39.4"


Two 30-round Lancer L5-AWM Black

The USAC rifle line-up is setting new standards in the firearm industry for modern AR type rifles and AR rifle manufacturing. A USAC rifle is one of the most lightweight, durable rifles on the market, and one of the most accurate rifles manufactured today. The design is aesthetically appealing and ergonomically accurate. USAC is a leader in patented recoil mitigation technology, and attends to every manufacturing detail for a precision fit. Custom options for this rifle include the U.S. Arms Cam-Lock lower receiver and the M-905 Talon Muzzle Brake.

Product Benefits

  • Designed and engineered to allow significant weight reduction without sacrificing strength
  • Shoots 3/8″ or less MOA with match grade ammunition when equipped with Cam-Lock lower receiver
  • Machined to aerospace tolerances in a ISO certified aerospace facility

Note: Cerakote items may require up to 2 weeks processing time.