Geissele URGI Complete Upper Receiver Group – 14.5″


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SKU: 08-159 UPC: 817953023198

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
  • Geissele Reliability Enhanced Bolt Carrier Group
  • Geissele Airborne Charging Handle, DDC
  • Geissele SMR MK16, DDC, 13.5″
  • Geissele 5.56MM 14.5″ GOV profile, CHF, Chrome Lined, ML Gas, Barrel
  • Geissele Super Gas Block .750 Low-Profile Gas Block, Pinned (Bombproof Installation)
  • SureFire SF4P 4 Prong Flash Hider, Pinned & Welded
  • Super 42 Braided Wire Buffer Spring and H1 Buffer Combo INCLUDED!




Technical Information

Barrel Twist 1/7
Color / Pattern ,
Finish Anodized
Caliber 5.56 NATO / .223 Remington
Gas Block Size .750
Size 14.5"
Thread Pitch 1/2 x 28
Firearm Compatibility

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