AR-15/M16 Buffer Tube 6 Position – NiB-X Nickel Boron
7075 aluminum mil-spec receiver extension tubes accept M4-style adjustable carbine buttstock. Six position. Machined from lightweight aluminum extrusion then NiB-X® nickel boron coated.
Availability: In Stock
Style: Carbine, Mil-Spec
1 review for AR-15/M16 Buffer Tube 6 Position – NiB-X Nickel Boron
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Chris (verified owner) –
Exterior is completely coated, but the bottom 10% on the inside of the tube is either uncoated or appears partially coated/treated with something.