Geissele / Colt Upper Receiver Group, URG-I, Modified Clone Pinned, Vortex mount combo

$1,829.00 $1,699.99
(You save $129.01)
Assembled to Order, Ships in 5-8 days, pin and weld services will require additional time
Geissele / Colt M4A1 Upper Receiver Group URGi combo with Vortex mount

Geissele / Colt Upper Receiver Group, USASOC URG-I Clone Mod 1, with pinned flash hider and Geissele gas block and red-dot mount

with Geissele Vortex mount

Clone correct complete upper receiver group with Geissele SOPMOD DDC mount for Vortex 1-6x scope.  

This is with the PINNED Surefire flash hider, and Colt upper receiver group.

This is for the PINNED Surefire 4-prong flash hider, or the Surefire three-prong Warcomp.

Note:  This is identical in all ways to the Geissele assembled Clone Correct URGi, except that it has a Geissele low profile gas block, instead of a Daniel Defense Mk12.  This is what is being called the "modifed Clone URGi" or the URGi Mod 1.

Some of our customers had asked for the Geissele block and we at Charlie's are happy to provide this as a Charlie's Exclusive.  The Geissele gas block is installed and pinned by Geissele. Some users have found that the Mk12 gas block could hit the Geissele rail during firing.  This has not been the case with our testing, but some end-users of the Clone URG have noted this.  Others have asked that we provide the Geissele gas block as it is lighter, smaller, and some customers prefer this over the DD Mk12, which is, of an older generation of AR15 hardware.

The final assembly of the Colt receiver to the Geissele rail and DD barrel has been done under contract exclusively for Charlie's by Potomac Armory.

Then, we add a Geissele SOPMOD scope mount, in DDC

The US Army Special Operation Command is changing out 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

This model is the modified Geissele clone correct upper, also known as the Clone URG Mod 1.  Charlie's has worked closely with Geissele to bring you what you are looking for.  

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 lotsa slots for other accessories. T-markings are engraved on the rail and painted on the receiver


  • Colt M4 receiver with forward assist, shell deflector & ejection port cover
  • Geissele Mk16 Super Modular Handguard with Geissele roll-marks
  • Daniel Defense 14.5" CHF barrel with 1-7" rifling & 1/2"-28 tpi muzzle threads and mid-length gas system
  • Geissele Airborne charging handle (military version with roll-marks) DDC 
  • Geissele black nitrided gas block, pinned and installed on the barrel by Geissele.
  • Colt M16 BCG: bolt and carrier group
  • Geissele SOPMOD 30mm mount for Vortex, Nightforce, Sig Sauer and Steiner optics.
  • Surefire SOCOM pinned and welded flash hiders, your choice of 4-prong or WarComp 3-prong or WarComp Closed-Tine
  • Surefire certificate for 30% off on SOCOM mil-spec NSN suppressor
  • Surefire certificate for 30% off on select Surefire light

Note:  if you select 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.

 Note:  for free or discounted mount offer:  Put in the comments, when purchasing, which mount you would like:  a) ACOG mount, b) the Aimpoint T1 style mount in full or 1/3 co-witness, or c) a $50 discount on any Geissele mount.  If your choice is not in-stock, you will receive the mount separately when in-stock.  If you choose the $50 off offer, you will receive a code to purchase your Geissele mount within 90 days of the purchase of the URGi.

Clone Correct URG-i Complete
SOPMOD DDC 30mm Vortex 1-6x mount (special price)
Total 1654.99 

note on barrel:
  This is a pinned and welded flash hider, which takes a 14.5" barrel and makes it a legal 16" barrel, so not a short barreled upper, and not an NFA item, when paired with a lower receiver.  "Street legal."

ITAR warning Charlie's Custom Clones ITAR warning:  This item may only be purchased and shipped to US Persons within the USA.  This is a military item, which is restricted from export without US Government permission