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M4A1 Geissele USASOC Upper Receiver Group, URGI, CLONE CORRECT, 14.5" Potomac 2024 Production

$1,300.00 - $1,599.95
SKU:
G05858000
Availability:
Assembled to Order, Ships in 2 to 5 weeks
M4A1 Geissele USASOC Upper Receiver Group, URGI, CLONE CORRECT, 14.5" Potomac 2022 Production

Geissele Upper Receiver Group, USASOC URG-I with pinned flash hider

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This is the current production, Military Clone Correct Upper Receiver Group, with Colt, Daniel Defense and Geissele correct components

Now available with Surefire SOCOM WarComp 3-prong, SOCOM WarComp Closed-Tine, SOCOM 4-prong, Extended A2, or no muzzle device.

The US Special Forces changed out its M4 upper receivers, beginning in 2018, and the URGI was born.  The URGI kit upgraded the M4 upper receivers with this new improved model, which features the Geissele Mk16 DDC rail, and a Daniel Defense 14.5" Government profile mid-length barrel, cold hammer forged.

Note:  This product originally came to market with Charlie's and Geissele collaborating to bring a military correct upper receiver group.  Geissele exited the clone-correct market by early 2019, and Charlie's now has this model assembled by Potomac Armory, with all genuine Colt and Geissele and other military-correct components.  This is as close as you get to what the US Army is issued.

Each URGI is fitted with the handguard Geissele designed specifically for USASOC, the MK 16 M-LOK Super Modular Rail handguard with a full-length Picatinny top rail and lots of slots for other accessories. T-markings are engraved on the rail but not painted white to help keep the rifle unobtrusive.  While supplies last, the Mk16 rails for the clone-correct will feature the QD sockets without the steel reinforced cups.

The clone-correct models come with the Daniel Defense CHF mid-length gas barrels, marking the first time a mid-lenght gas system was used with an M4 carbine.  Also included is the clone-correct gas blocks:  your choice of the original NAVSEA Mk12, or the newer improved low profile gas block (LPGB).

Details:

  • Colt M4 upper receiver with forward assist, shell deflector & ejection port cover, currently sourcing Colt upper receivers without CAGE Code markings, complete with M4 feed ramps and interior dry lube treatment.  
  • Geissele Mk16 Super Modular Handguard with Geissele roll-marks and NSN number in DDC.  Your choice of no reinforced QD sockets, or stainless reinforced QD sockets.
  • Daniel Defense CHF mid-length gas CMV barrel, with 1:7 twist and chrome lining
  • Geissele Airborne (military version with roll-marks) DDC charging handle
  • Mk12 gas block and a choice of the DD modified Mk12 gas block, when available. 
  • Colt M16 bolt and carrier group
  • Mk12 or LPGB - built with your choice of the original design of the Mk12 gas block, or the revised design with a low profile pinned gas block.
  • Surefire flash hider, pinned and welded, with your choice of SOCOM WarComp 3-prong, SOCOM WarComp Close Tine, SOCOM 4-prong, or Extended A2.

Note:  if you select Surefire SOCOM WarComp, we time this as neutral (ports pointed up).  If you want it timed to the starboard side, please make sure to put that in the comments.  Both are correct.  Our gunsmiths prefer ports timed up.

Production note:  In 2018 Geissele was manufacturing this, but stopped offering the clone-correct URGi.  In 2020, Potomac Armory took over the build from the exact same components that Geissele used:  factory Geissele, Surefire, Colt and Daniel Defense parts.  All the same product, but not shipped in a Geissele box, as this is no longer a Geissele factory product.  Potomac Armory and Charlie's Custom Clones are factory dealers and OEM (original equipment manufacturers), and are using 100% authentic parts, and nothing fake substituted. Potomac is building to the exact same specification as SOCOM has directed, except for the addition of a pin and weld on the flash hider.  In fact, if you do not want the pinned muzzle device, let us know.  There are NFA considerations if you install a 14.5" upper receiver group without a pin and weld.

Note:  This barrel, with a pinned and welded flash hider will measure over 16" so it will be "street legal," and will not require NFA registration as an SBR when mounted on a lower receiver as a rifle.

Note on gas blocks:  The originally issued URGIs came with NAVSEA spec Mk12 gas blocks.  Later models came with a modified Mk12 gas block with a tapered bottom.  Some drop-testing had suggested that the gas blocks might be too wide for the Geissele Mk16 rails, and some adjustments were made.  Some clone enthusiasts prefer the original and some prefer the modified.  Let our team know which you prefer.  The pinned LPGB is standard from Potomac, if you do not ask for the Mk12.

Note on Surefire muzzle devices:  The SOCOM versions of flash hiders will support the Surefire SOCOM family of suppressors.  Also, any of the Surefire muzzle devices will fully function without a suppressor.

Note on QD sling sockets:  For our Clone-Correct rails, these are available, as supplies last, with your choice of the earlier design without reinforced QD sockets, or the 2024 new model with reinforced stainless steel sockets.  Place your preference in the comments at check-out.  If no choice is made, we will provide the first available.

Note on pictures:  The pictures below contain shots of pre-production prototypes, as well as versions that may have been offered in the past and are no longer offered.  Charlie's updates pictures from time to time.  Please refer to the specifications above, which are the most accurate we have at this time.