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CMMG 18.0" MT Barrel Sub-Assembly 5.56mm 55D660A

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CMMG, Inc.
Typically ships the same business day when ordered before 4pm CST.
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Perfect for building your custom AR-15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.

Features and Specifications:
Manufacturer Number: 55D660A
Medium Taper Profile
416 Stainless Steel
Bead Blasted Finish
1:7 Twist
5.5645 NATO Chamber
Threaded 1/2-28
Rifle length gas port
.750" Gas Journal

Item#: ARR-118-073
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