Colt 10.3" Mk18 barrel, Gov't profile, special performance tuned

Special Order Item ONLY. Expect lead time of 3 to 8 months

Colt 10.3" Mk18 barrel, Gov't profile

Specialty Tuned barrel for extreme shooters

This is the barrel for a Mk18 Mod 0 build, or for a custom short barreled rifle. 

This barrel is the 10.3" Colt Mk18 barrel.  Typical M4 (thin) profile, which is historically correct.  Factory direct from Colt. 

Standard Colt chrome-lined, to last almost forever, and that includes throwing it in the mud.  Front Sight Base (FSB) and barrel nut included.

This is a Colt factory barrel, which has been performance tuned by our friends at Specialized Armament.  They take Colt engineering seriously, and have inspected every inch of the barrel, tuned the gas port for optimal 0.70" SBR performance, check and align the FSB for perfect aiming, fit the sight base with perfectly placed taper pins, and tuned the M4 feed ramps.  This is the barrel that elite law enforcement units wait months and months for.  The performance tuning is much more than you will ever need, but good to know you have it.

Roll-marked with Colt CAGE code:  13629 M P 5.56 NATO 1/7.

Newer, correct gas port, at the correct 0.070" size.

Colt part SP64049 

Made in USA - for sale only in USA

Note on Colt 10.3" & 11.5" barrels:  Charlie's offers a variety of choices for the collector, clone-builder, law enforcement officer and shooting enthusiast.

  • Colt 10.3" SOCOM profile barrel with Colt roll-marking, gunsmithed by Potomac Armory
  • Colt 10.3" Gov't profile factory barrel
  • Colt 10.3" "Crane Style" Gov't profile barrel, cut-down, gunsmithed by Compass Lake Engineering
  • Daniel Defense 10.3" Gov't profile barrel, either with low-profile gas block, Mk12 gas block, or virgin.
  • Colt 11.5" "FBI" SOCOM profile barrel, with front sight base
  • Colt 11.5" "FBI" SOCOM profile barrel, virgin

We take special care in bringing you the best in short barrels, and use the best artisans, both in-house, and in our extended supply chain, when something has to be engineered to a Colt production barrel.  Our collectors and cloners will want the 10.3" barrel for historical accuracy.  The Daniel Defense is a great option, as it is now being used by US Special Forces in limited numbers, and is readily available and affordable.  For more authenticity, choose a Colt 10.3" barrel. 

Shooters and law enforcement typically choose the 11.5" barrel, as it has better overall performance, especially in the heavy (SOCOM) profile. Our LE customers tell us that they will only use Colt barrels in 10.3" to 14.5" lengths.  Colt truly does dominate that market, while other barrel companies own the long-range and sniper market.

As always, we are here to help.  Drop us a line, or use our online CHAT to ask about our short barrels.

Note on pictures:  A2 flash hider included if requested.

All NFA laws apply.  If you are uncertain if you can own this, check federal National Firearms Act, also with your state authorities.  I am not your lawyer.  You need to make sure you can own it.

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.