Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. Medium taper profile. 416 stainless steel. Bead blasted finish. 1:7 twist. Threaded 1/2-28. Midlength gas port. .750 inch gas journal.
Manufacturer | CMMG
|
Model | 55D590A
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UPC | 815835016160
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Caliber | 5.56x45mm NATO
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Unit/Measure | ea
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Stock | 2
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