Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.
16.1?
Medium Taper Profile
416 Stainless Steel
Bead Blasted Finish
1:7 Twist
5.56×45 NATO Chamber
Threaded 1/2-28
Midlength gas port
.750? Gas Journal
Additional information
UPC
815835016160
Manufacturer
CMMG
Manufacturer Part Number
55D590A
Length
16.10"
Caliber/Gauge
.223 REM/5.56 NATO
Model
Barrel Sub-Assembly
Product Type
Rifle
Rate of Twist
1:7"
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