Cornerstone Lower fans have been asking for years now; "Do you make a forged upper with the same gorgeous anodizing and tight fit as your lower?” Ask and ye shall receive!
Finally you can grab what we consider 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.
- 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
- M4 Feedramps
- .250" Takedown pin holes
- Engraved T-marks
- Functions with nearly all available AR-15 parts kits and lowers
- Match with our Cornerstone lower receiver for a solid and dependable fit
- Stripped Receiver DOES NOT include port door, forward assist or any small parts
I recently purchased several GGP forged AR15 blem lowers and blem uppers. All I can say is, if their blem receivers are any indication of their quality, I cannot wait to buy one of their standard receiver sets. When I opened each individual lower, I thoroughly inspected them for, what I expected to be, pits, scratches, or inconsistencies in the anodizing. I found none; not one. These "blem" receivers were nicer and better than what most other companies consider to be premium. Not only do these lowers look immaculate, but the machining and craftsmanship is top notch! There is not a single rough edge, burr, machine/tool mark, or any sign of imperfection. I have already built out a few of them and everything fits perfect and every hole lines up exactly as expected. These are some of the best quality lowers I have ever seen. If all of them were not the same level of quality, I would say the "good" lowers somehow got mixed in with the blems because these are perfect. I will absolutely be back and buying more from GGP!
Great upper receiver. Put on a Spikes lower and both together feel like one solid piece. Upper looks very clean, dark finish looks great. The finish looks perfect. Makes me wish I had bought a GGP lower too. Shipping was quick and received various updates during the process which was nice.
I picked four of these up during the Black Friday sale. The price was too good to pass up on. Receivers are perfectly machined and fit with the same lowers I got with no play or wiggle. Almost like these were machined together sets. Finish is not standard milspec anodizing. It is much more like my Wilson Combat and Noveske sets. Highly recommend the for any builds.
I received one of these uppers and noticed some finish issues on the anodizing. I reached out to Grey Ghost and they sent me an overnight return label. I had the replacement in a few business days. Oddly enough, the new upper seems to have tighter tolerances and is just beautiful. It's one of the nicest, if not the nicest upper that I have. There is a major difference in quality between one of these and say, an Aero upper. Don't get me wrong, I love Aero, but this guy is on another level. Their jet black, rich anodizing is part of what makes it. High quality paired with stellar customer service makes Grey Ghost a big win for me. Will be buying more.
Just received today, GGP shipped very quickly and packaged well. High quality receiver and the anodization is absolutely top-notch - it's beautiful. I have several other stripped uppers from other highly-regarded manufacturers, and this one is all around a nicer finish. Can't wait to take delivery of the lower!
I received the upper as a set with the lower receiver. Its finish and fit mirror the same quality of the lower receiver. Same deep black finish with no scuffs or blemishes. Quality craftsmanship at a good price.