Description
The URG-I is a near-clone of the upper receiver group in service with USASOC. It is a complete upper: fitting it to an existing lower is effectively a new rifle from the magazine well up.
The Geissele Super Modular Rail MK16 handguard, hammer-forged barrel and matched gas system are the substance of it. Geissele built the barrel to take the pressures of M855A1 (AB57) ammunition.
Specification
| Caliber | 5.56mm |
|---|---|
| Receiver | Mil-spec M4 upper receiver assembly |
| Bolt carrier group | Geissele Reliability Enhanced |
| Gas block | Super Compact |
| Charging handle | Airborne Charging Handle (ACH), DDC |
| Barrel | Geissele 14.5″ GOV profile, cold hammer forged, chrome lined, mag phos, ChromolyV, 1:7 twist |
| Gas length | Mid-length, .076″ port |
| Rail | Geissele 13.5″ MK16, DDC |
| Buffer | Super 42 braided wire spring with H1 buffer |
| Muzzle device | SureFire SF4P four-prong flash hider, pinned & welded |
| Overall length | 24.25″ |
| Weight | 4 lbs 3 oz |
Before you buy
- This upper carries a permanently pinned and welded muzzle device, which makes the device integral to the barrel so the barrel meets the 16″ minimum length. No registration or tax stamp is required. Removing or modifying the muzzle device converts it into an item regulated under the National Firearms Act. State and local restrictions may also apply, and compliance is the buyer’s responsibility.
Geissele builds to order rather than holding reseller stock. Firearms, uppers, barrels and bolts carry a factory lead time of roughly 15 to 25 weeks depending on the product — please order with that timeline in mind. Some orders ship sooner. We confirm timing when your order is placed — see our backorder policy.
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