Product Description
Colt M4 CQB 10.3 Inch 5.56mm Barrel Assembly w/ Fixed Front Sight P/N: SP64049 UPC: 098289600240
Factory Colt M4 CQB profile barrel. 10.3 inch, 5.56x45mm NATO, carbine-length gas system. Complete assembly with M4 feed ramps, barrel nut, and fixed front sight tower with sight post. Muzzle is threaded 1/2-28 for your choice of muzzle device.
Same barrel family Colt uses on CQB / Commando-length uppers. Chrome-lined, 1:7 twist, government contour.
Features
- Factory Colt M4 CQB 10.3" barrel assembly
- 5.56x45mm NATO chamber
- Chrome-lined chrome-moly barrel
- 1:7 twist, six-groove rifling
- Government / M4 contour
- Carbine-length gas system
- M4 feed ramps and barrel extension
- Barrel nut included
- Fixed front sight tower with sight post
- Muzzle threaded 1/2-28
- Parkerized / matte black finish
Specs
- Manufacturer: Colt
- Part number: SP64049
- Caliber: 5.56 NATO / .223
- Length: 10.3"
- Twist: 1:7
- Gas system: Carbine
- Gas block journal: 0.750"
- Threads: 1/2-28
- Contour: Government
- Chrome lined: Yes
- Includes: Barrel, barrel nut, FSB / sight post
- Platform: M4 / AR-15
- Origin: USA
NFA notice
A barrel under 16" is restricted. Install only on a pistol, a registered SBR, or a registered machine gun. Do not put this barrel on a Title I rifle. Buyer is responsible for all federal, state, and local laws.
Muzzle device, gas tube, and upper receiver are sold separately.
Product Videos
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Product Reviews
30 Reviews Hide Reviews Show Reviews
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Great on hard-to-find items
Great on hard-to-find items and an overall good experience. Only thing I could gripe about is their rather stern guidelines for returns and it is for this reason I may limit my purchases to only the rarest things that I may need.
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Colt 10.3 barrel with assy with FSB
Received this barrel yesterday and it looks good! This barrel came with the sling mount on the front!!! I'm still waiting on the a delta ring assembly to arrive before I put the upper together.
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Colt 10.3 Barrel
Fast Shipping! Just as Described!
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Colt 10.3 barrel
Great barrel at a great price.
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It's a Colt!
Don't complain about the price, it is what it is and AU delivers. This is the real deal straight from Colt to you through AU and they did a great job getting it to me. For anyone looking to do a clone correctly or if 10.3 is what you want look no further.
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Barrel
Great price and just the part needed for a future SBR build.
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Factory New
Brand new and in blue protective bag. Great price compared to elsewhere.
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Exactly what you’d expect!
This Colt barrel is what you want for your CQBR build. Comes sealed in a blue bag.
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Nice Colt Barrel
Nice barrel with FSB - everything went together perfectly. May buy another to have on hand.
