Geissele URGI (Stripped) Upper Receiver – 14.5″


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SKU: 08-160 UPC: 817953023204

Product Description

The USASOC URGI is a near-clone of the upper receiver group currently in service with the US Army Special Operations Command.
With the advent of the USASOC URGI, the American rifle silhouette has changed forever. The Geissele Super Modular Rail MK16 handguard, hammer-forged barrel, and mid-length gas system work in concert for a package that delivers measurable increases in hit probability. Designed to take the full rigors of the new M855A1 (AB57) ammunition, the USASOC URGI also takes full advantage of its capabilities. Once the USASOC URGI is installed on an existing system, it essentially makes for a brand new weapon.

  • Mil-Spec M4 Upper Receiver Assembly
  • Handguard: Geissele SMR MK16, DDC, 13.5″
  • Barrel: Geissele 14.5″ Cold Hammer Forged
  • Barrel Profile: Gov’t
  • Caliber: 5.56 Nato / .223 Rem
  • Twist Rate: 1/7
  • Thread Pitch: 1/2 x 28
  • Gas System: Mid Length
  • Platform: AR-15, M4, M16


  • This is a stripped upper receiver group and does not include a bolt carrier group, charging handle, or muzzle device




Technical Information

Barrel Twist



5.56 NATO / .223 Remington

Color / Pattern




Firearm Compatibility

Thread Pitch

1/2 x 28



Catalog Location

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 visit