Colt
Colt M4 CQB 10.3 inch 5.56mm Barrel Assembly w/ Fixed Front Sight
- SKU:
- SP64049
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.
30 Reviews
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Colt CQB
I am in the process of re-barreling several agency rifles with the 10.3" Colt CQB barrels. These are excellent quality barrels and the sales associate (Jack) is a pleasure to work with!
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Great barrel
Bought this for my mk18. The barrel mounted nicely to the Colt upper receiver and BCG. Unsure of gas port size, but Im using an H2 buffer in this build and everything is functioning properly. Very pleased so far
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Awesome Barrel Assembly
Super nice Colt barrel assembly for my Mk18 Mod 0 build. Fits great in my BCM upper and the headspace is within spec for my Colt bcg. Great deal and I couldn't be happier.
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More then happy
I purchased the colt M4 10.3 barrel Assembly w/fixed front sight could not be more happy with it. Shipping was faster then anticipated and performance so far has been outstanding.
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Barrel purchase
I got a great Colt barrel for a great price. It arrived quickly. I'm very happy.
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Mk18 mod 0 barrel
Outstanding quality! Quick shipping !
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Colt barrel 10.3”
Pretty excited to finish 10.3” upper! Quick shipping- very satisfied.
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Hard to come by
Hard to come by. Perfect for CQBR/MK18 clones without having to send out your barrel to get chopped and rethreaded.
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Great Item and Fantastic Service
Received a shipping confirmation later that day and received less than a week from ordering. Product arrived as delivered from Colt. Can't say enough about this place getting us cloners the parts we need!
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Colt 10.3" Barrel
I purchased this genuine Colt 10.3" barrel and I have to say there is no denying its quality. Arms Unlimited often has these specialty items at fair prices unlike other online vendors so I have to thank them for their support.
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