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:11, Page:003
Big Book Catalog, Issue:72, Page:003

COLT - M4 5.56 UPPER RECEIVER GROUPS

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6 Item(s)
Backorder, See Associate
Out of Stock

Cartridge: 5.56 mm NATO

Finish: Black

Style: Complete

Length: 16

Online Only
In Stock

Cartridge: 223 Remington, 5.56 mm NATO

Finish: Black

Style: Complete

Length: 14.5

Online Only
In Stock

Cartridge: 5.56 mm NATO

Finish: Black

Style: Complete

Contour: Carbine

Length: 14.5"

Muzzle: 1/2-28, ...

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Backorder, See Associate
Pre-Order

Cartridge: 5.56 mm NATO

Finish: Black

Style: Complete

Contour: Carbine

Length: 11.5"

Muzzle: 1/2-28, ...

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Alert Me When Available

This item is currently unavailable for backorder.

Cartridge: 5.56 mm NATO

Finish: Black

Style: Complete

Contour: Carbine

Length: 11.5"

Muzzle: 1/2-28, ...

click details to view more....

Alert Me When Available

This item is currently unavailable for backorder.

Cartridge: 5.56 mm NATO

Finish: Black

Style: Assembled

Length: 16.1

Muzzle: 1/2-28

Twist: 1-7