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Brownells 75th Anniversary - A Shooting Heritage
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Add the Colt legend of reliability to your rifle or build with these complete feature 1/7 RH twist in a chrome lined, button rifled barrel.  Available with or without a charging handle, bolt carrier group, and back up sights. All NFA rules apply.

NOTE: “Stripped” does NOT include bolt carrier group (BCG), charging handle, or rear backup sight


AR-15, Issue:06, Page:084
AR-15, Issue:07, Page:002
AR-15, Issue:11, Page:003
Big Book Catalog, Issue:63, Page:479
Big Book Catalog, Issue:64, Page:002
Big Book Catalog, Issue:68, Page:003
Big Book Catalog, Issue:69, Page:003
Big Book Catalog, Issue:70, Page:002
Big Book Catalog, Issue:71, Page:003
Big Book Catalog, Issue:72, Page:003
Big Book Catalog, Issue:73, Page:003

COLT - M4 5.56 UPPER RECEIVER GROUPS

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In Stock

Cartridge: 5.56 mm NATO

Finish: Anodized

Style: Complete

Color: Black

Length: 16"

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Cartridge: 223 Remington, 5.56 mm NATO

Finish: Anodized

Style: Complete

Color: Black

Length: 14.5"

Alert Me When Available

This item is currently unavailable for backorder.

Cartridge: 5.56 mm NATO

Finish: Anodized

Style: Complete

Color: Black

Contour: Carbine

Length: 14.5", ...

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Online Only
In Stock

Cartridge: 5.56 mm NATO

Finish: Anodized

Style: Complete

Color: Black

Contour: Carbine

Length: 11.5", ...

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sale
Online Only
In Stock

Cartridge: 5.56 mm NATO

Finish: Anodized

Style: Complete

Color: Black

Contour: Carbine

Length: 11.5", ...

click details to view more....

sale
Online Only
In Stock

Cartridge: 5.56 mm NATO

Finish: Anodized

Style: Assembled

Color: Black

Length: 16.1"

Muzzle: 1/2-28, ...

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