We had some imperfections at our barrel shop, so we decided to do what any good gun manufacturer would do - Cerakote it and call it unique.
This barrel is the 10.3" thick SOCOM profile (without M203 cuts), very much like the 11.5" FBI profile, but this barrel is 10.3," in the thick profile. This is new old stock, 2015 Colt manufactured. This is not a cut-down.
Factory Colt marked, "C MP 5.56 NATO 1:7" and date stamped. Standard Colt chrome-lined, to last almost forever, and that includes throwing it in the mud. Comes ready for a flash hider of your choosing, with standard 1/2-28 threading. This is a stripped barrel, virgin, no FSB, and not cross-drilled.
This barrel is a great upgrade for a Mk18 build, or for a custom short barreled rifle. Yes, it will fit under M4 handguards or a RAS rail. This is an ideal barrel for a Mk18 Mod1 build, to under your 9.5" rail, like the Daniel Defense RIS-II.
This barrel left the Colt factory as a 10.3" barrel. Our friends at Potomac Armory have installed and timed an M4 extension, and re-drilled the gas port to be the correct 0.070" port for the ultra-short gas system. But, somewhere along the way in finding the timing of the M4 extension and drilling the gas port there were some cosmetic imperfections. These barrels were some of the first. You might call them guinea pigs. Some of the barrels had some blemishes in the phosphated steel, and some have the gas port drilled off-center, where the gas port does not line up with the Colt roll marks. Nothing whatsoever wrong with the gas port, just the cosmetics of where the roll marks are. Some are at 11:30, others at 2:00, etc.
Professionally Cerakoted in Magpul FDE.
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.
All NFA laws apply. If you are uncertain if you can own this, check the 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 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 the USA.