Brownells 75th Anniversary - A Shooting Heritage
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FITS: AR-15 - Common Parts

The Colt factory M4 Upper receiver is a flat top M4 receiver with an 11.5" barrel assembly. The upper receiver does not include the bolt carrier group or charging handle, allowing the user to further customize their build.

COLT - M4 5.56 11.5" UPPER RCVR & BBL ASSEMBLY

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