Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

Ultra-Hard, Smooth-As-Glass Finish For Maximum Durability & Smooth Cycling

Stripped receiver has WMD’s NiB-X nickel boron coating inside and out to provide an exceptionally tough, ultra-smooth surface finish for outstanding wear resistance and lubricity. A ceramic topcoat is applied for color on the exterior only, leaving the nickel boron exposed inside to keep friction with the bolt carrier to the absolute minimum. Works great with standard carriers, too, but even smoother with nickel boron coated bolt carriers, including WMD’s NiB-X coated carrier, available separately. M4 feed ramps ensure reliable feeding.


AR-15, Issue:09, Page:004
Big Book Catalog, Issue:66, Page:004

SPECS: 7075 T6 aluminum, NiB-X coating with matte ceramic finish, Black or Flat Dark Earth. Stripped receiver only. Fits standard AR-15/M16 lowers, and accepts standard barrels and upper receiver parts. .250" dia. pivot/takedown pin holes. M4 feed ramps.

WMD GUNS - AR-15/M16™ NiB-X COATED UPPER RECEIVER

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2 Item(s)

$142.99

Out of Stock

Cartridge: 204 Ruger, 223 Remington, 5.56 mm NATO

Finish: Black

Style: Stripped

$142.99

Out of Stock

Cartridge: 204 Ruger, 223 Remington, 5.56 mm NATO

Finish: Flat Dark Earth

Style: Stripped