This model is the Geissele near clone correct upper. Charlie's has worked closely with Geissele to bring you what you are looking for.
Your choice of the Surefire 4-prong flash hider, or the Surefire 3-prong Warcomp flash hider (Warcomp closed tine available upon request)
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 but not painted white to help keep the rifle unobtrusive.
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.
NFA Comment: The 14.5" barrel is pinned and welded to make the barrel length compliant with the National Firearms Act, and is not a short barreled upper. Removal of the pinned flash hider will result in the upper being an NFA item, and is also not recommended, as it will cause damage to the threads of the barrel.
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.