Colt M4A1 SOCOM Block 1 Upper Receiver Group 14.5" factory pinned and welded

May require light shop work prior to shipping: should ship in 4-6 days (+/-)
Colt M4A1 Block 1 SOCOM Upper Receiver Group with KAC RAS

Colt M4A1 SOCOM Block 1 Upper Receiver Group

with Mil Spec M4 RAS and vertical grip; pinned and welded 14.5" Colt SOCOM barrel

Direct from Colt, factory pinned and welded extended flash hider.

The barrel is pinned and welded by Colt, overall barrel length is LEGAL at 16.1”. New factory Colt M4A1 Complete Upper. Colt factory pinned 14.5” SOCOM profile barrel

"Street legal" factory pinned barrel from Colt, makes this item legal to own without an NFA tax stamp. A few surface scratches, which, if you buy new Colt, you know are common. This is a highly desired and sought after upper. 

The upper comes with Complete with a KAC M4 RAS handrail with 3 KAC ribbed covers, Colt heavy profile SOCOM barrel (standard SOCOM with M203 cuts), Matech GI issue rear BUIS and genuine Colt complete BCG. Still heavy with Colt factory oil, not shot since factory testing. This is a new factory upper, with the upper receiver, barrel, FSB, all being factory timed and installed Yes, bolt, barrel and upper receiver all have Colt markings that you would expect.*


--- Colt mil-spec cage code stamped 14.5-Inch 1/7 twist 5.56 NATO chrome-lined MP tested barrel with factory tuned and professionally pinned front sight base (FSB) with bayonet lug and an option for a sling loop swivel.   This upper comes with no front sling swivel.  You can add one here.  Note: comes standard with Colt pinned extended A2 flash hider, so not an NFA item

--- Colt M4 upper receiver with feed ramps.

--- Accommodates the full range of 5.56mm ammunition, including the NATO M855/SS109 and U.S. M193, as well as longer-range ammo like the Mk262 Mod1 77 grain, preferred for SOCOM operations, utilizing a rifling twist of 1 turn in 7".

--- Complete Colt M16 Full Auto Bolt Carrier Assembly is standard.  All the normal markings on the bolt.  Carrier may or may not have a "C" mark, as Colt is sending us both.

--- Mil-spec P&S M4 "quad rail" RAS with two Knights Armament 11- rib full size rail covers and one short rail cover for the bottom rail, to fit the VFG.  Note:  US Military uses both KAC and P&S Products quad rails, pretty interchangeably.  The KAC rail covers with CAGE Code are included.  Looks and functions the same as Knights RAS, while saving a little.

--- Backup rear sight: Matech USGI 600m rear back-up sight (not Picatinny marked)

--- Colt Mil Spec Charging Handle.

--- Knights Armament VFG (vertical forward grip) included.


Consider an optic with your upper -- EOTech red-dot, Aimpoint M68 red-dot or the Elcan 1x/4x Specter with your upper.


Note: All ITAR regulations apply. Charlie's deals in the real McCoy. Your item most likely has parts that cannot be shipped outside of the USA, or owned in the USA by non-US Persons. You take accountability to safeguard parts and the entire upper, and get necessary approvals to transport outside of the USA.


 * Some Colt uppers are being shipped with the front sight base (FSB) not being marked with an "F" and the bolt carrier not being marked with a "C."  All upper receivers have the Colt CAGE Code and all bolts are marked "MPC" like you would expect.