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4150 CM Ar15 Barrel
- 1:7 Twist
- carbine gas length
- .750 diameter
- m4 Contour
- M4 Feed Ramps
- 1/2-28 Threads
- 5.56 Nato chamber (shoots 5.56 or .223)
Made in USA
- Item #: 10.5brl223w
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