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RSR Part #: GGPGGPCUR Manufacturer Part #: GGPCUR

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Grey Ghost Precision, Forged Upper, No Barrel or BCG, Black Finish, Machined From Forged 7075-T6 Aluminum, Black Hard Anodized With A Surface Hardness Of 60 Rockwell, M4 Feedramps, .250" Takedown Pin Holes, Stripped Receiver DOES NOT Include Port Door Or Forward Assist


WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

  • Machined to tighter than Mil-Spec tolerances, the critical tooling dimensions are held to within +/ - .001"
  • Machined from forged 7075-T6 Aluminum
  • Black Hard anodized with a surface hardness of 60 Rockwell

Product Description

Finally you can grab what Gray Ghost Precision considers the best forged upper in the biz, and it is a perfect companion for your GGP Cornerstone Lower receiver. After all, accuracy comes from tight, precise tolerances that minimize all variables from the moment the hammer strikes the firing pin until the round leaves the muzzle. By perfecting the critical tooling dimensions to the smallest degree, a forged receiver can punch the same hole down range.