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Questions & Answers
Who makes the Geissele barrel? I heard it’s Daniel Defense, is this true? Expert Answer

The Geissele Usasoc AR15/M4/M16 Stripped Upper Receiver Group features a Geissele 5.56MM 10.3",GOV profile, CHF, Chrome Lined, Carbine Gas, Mag Phos, ChromolyV, 1/7 Twist, Barrel.

by Ethan, Gear Expert, February 21, 2023
Who’s the manufacturer of this barrel? Expert Answer

This upper has a 10.3" Geissele barrel.

by Kurt Colbourne, Gear Expert, September 24, 2021

Product Discontinued by Manufacturer

Geissele Usasoc AR15/M4/M16 Stripped Upper Receiver Group, 10.3in ML CHF, 5.56mm has been discontinued by Geissele and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Receivers yourself to try and find the perfect replacement for you!

Product Info for Geissele Usasoc AR15/M4/M16 Stripped Upper Receiver Group, 10.3in ML CHF, 5.56mm

This upper receiver group is a 10.3in variant of the Geissele URG-I.image

For more than 50 years the famed silhouette of the M16/M4 has only had one major and several minor changes. Barrel lengths and buttstocks have changed, but more or less the evolution of Americas right arm has proceeded apace with each generation of warrior making her their own. In that time, the sight of the M16/M4 in the competent grasp of young Americans has meant hope to countless millions of people around the globe.

With the advent of the USASOC URGI, that quintessentially American silhouette has changed forever. The Geissele Super Modular Rail MK 16 handguard, hammer forged barrel, and carbine 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. The USASOC URGI is a near-clone upper receiver group currently going into service with USASOC.

Please Note: This is a stripped upper receiver group, and does not include a bolt carrier group, charging handle, or muzzle device.

Package Contents:

  • Geissele Usasoc AR15/M4/M16 Stripped Upper Receiver Group, 10.3in ML CHF, 5.56mm

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Geissele Usasoc AR15/M4/M16 Stripped Upper Receiver Group, 10.3in ML CHF, 5.56mm Unavailable & Discontinued Models

List of Unorderable Models

  • Geissele Usasoc Upper Receiver Group, Stripped, AR15/M4/M16, 10.3in ML CHF, 5.56mm, 08-177 , MPN: 08-177 , UPC: 817953025208 , Code: 1TO-UPR-QR105D-08-177
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