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CMMG’s Barrel Sub-Assembly is ideal for building your custom AR-15 upper group. It comes with properly installed M4 barrel extension.
UPC
815835016153
Manufacturer
CMMG
Manufacturer Part Number
55DC70A
Caliber/Gauge
.223 REM/5.56 NATO
Length
16.10"
Model
Barrel Sub-Assembly
Rate of Twist
1:7"
Product Type
Rifle
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