When you want to start your AR build, the Cornerstone lower is the starting point. It is machined from forged 7075-T6 aluminum to tighter than Mil-Spec tolerance with nylon tipped tensioning screw to ensure the solid fit between upper and lower. It features a flared mag well, pictogram safe and fire indicators, chevrons on the front of the mag well, and the distinctive Grey Ghost markings. The lower functions with nearly all available AR parts kits and uppers. NOTE: Requires a lower parts kit, buffer & stock of your choosing to complete.

This firearm is legal in the state of California.

Some states have a restriction certain firearms. If you are not familiar with your state's regulations, please check with your local FFL gun dealer for the regulations in your state, before purchasing.

For California In Store Pick Up:

The price does not include the California Dealer Record of Sale fee of $37.19. That will be paid in store upon pick up. Please note if purchased online you MUST come into the Redstone Firearms Burbank, CA store to start the DROS process within 10 calendar days. Otherwise you will incur a cancellation fee of 10%.

For out of State Purchasers:Please email FFL@RedstoneFirearms.com with your order number and your requested FFL's name, phone number or email address so that we can set up the shipping. Please be sure to make an outreach to your requested FFL and verify they will accept the firearm transfer.