Due to the change in laws we are no longer able to ship to WA
Cornerstone; “the chief foundation on which something is constructed or developed” When you want to start your AR-15 build, the lower is the starting point. The fit and finish of our cornerstone will prove to you that you have the right beginning to a reliable and strong AR build. When coupled with our Grey Ghost Precision uppers, the match is very hard to beat.
Machined to tighter than Mil-Spec tolerance, 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
Features a nylon tipped tensioning screw to ensure the solid fit between upper and lower maintains for years to come.
Functions with nearly all available AR parts kits and uppers.
Flared mag well
Pictogram safe and fire indicators
Chevrons on the front of the mag well and the distinctive Grey Ghost markings tie the Cornerstone to Rifles from Grey Ghost Precision.
Due to the change in laws we are no longer able to ship to WA, CT, DC, MD, MA, NJ state, or IL
BEFORE ADDING FIREARMS TO SHOPPING CART:
- Please read the FAQ's page of the web site so you are familiar with payment options, policies, etc.
- Federal law requires this product to be transferred through a licensed FFL dealer. Grey Ghost Precision requires a copy of the dealer's FFL for verification. It's the customer's responsibility to notify the dealer of the order. Email email@example.com
- Once we receive the payment and signed copy of the FFL license, we will ship the firearm to your dealer. IT IS YOUR RESPONSIBILITY TO NOTIFY THE FFL DEALER OF YOUR ORDER.
- IF WE DO NOT RECEIVE A COPY OF THE TRANSFERRING FFL'S LICENSE WITHIN 7 DAYS FROM THE TIME OF ORDER, WE WILL CANCEL THE ORDER AND ISSUE A REFUND.
I received my 15 lower today. It looks great. I can’t see anything wrong with it. Can’t wait to finish the build. I bought gray ghost precision, lowers before. I can’t think of one that’s better made than these.
This receiver is well machined, and in perfect specification. The adjustment screw is a nice touch, although it wasn’t needed for me. It fit the upper perfect. No slop. Mag release slot is tight, but works perfectly. The finish is dark and slick. Think of Glock finish. It’s similar. I’m pleased and will buy a few more.
Great looking lower. High quality product. Everything was finished just as it should be. Fit and function are flawless. Will definitely use GGP products for future builds.
Was way nicer than I ever imagined so happy with this product I will never buy anywhere else I highly recommend it to anybody
Fit and finish are excellent. Bought them in perfect condition, they are ready for hard use.
I picked it up a lower from my FFL after reading great reviews, It looks fantastic, I did a side by side comparison with my Mega forged lowers, they are the ssame finish, superb quality, and look. Now I am just waiting for my GGP upper to arrive and everything will be full circle. Extremely pleased.
This is the best aftermarket lower available today. The finish is 2nd to none. The included tensioning screw and pre-tapped (4-40) takedown boss are dope. My only fear - price escalation because I will use these exclusively on all my builds. Five Stars
It's worthy of the name. The quality is apparent. Fit and finish are excellent.
These lowers are slick, finish is the best I've personally seen. Fitment to uppers is pretty tight. Engravings are very sharp. Would definitely recommend, especially for the price.