Grid Defense AR-15 Skeletonized 80% Lower Receiver

Build a customized, ultra-lightweight firearm from the ground up with the Grid Defense AR-15 Skeleton 80% Lower Receiver. Precision CNC-machined in-house in the USA from heavy-duty 7075-T6 forged aluminum, this 80% lower features custom skeletal cuts designed to shave off unnecessary weight while adding a distinctive tactical aesthetic to your build.

Engineered for smooth reloads under pressure, the lower features a precision-broached and flared magwell. Its universal geometry supports a wide range of popular AR-15 and pistol caliber carbine (PCC) chamberings, making it a versatile foundation for everything from standard 5.56 NATO setups to big-bore or pistol-caliber platforms.

Available in raw aluminum for custom DIY finishes, classic Hardcoat Black Anodized, or an extensive lineup of durable Cerakote colors, this receiver lets you tailor your rifle's look to match any theme or operational environment.

Key Features & Specifications:

• Skeletonized Design: Custom milled cutouts reduce total weight without compromising structural frame integrity.
• Forged Strength: Machined from high-strength 7075-T6 forged aluminum for maximum durability.
• Flared Magwell: Broached and flared magwell allows faster, smoother magazine changes.
• Multi-Caliber Compatible: Accepts .223/5.56, .300 BLK, 9mm, 7.62x39, 6.5 Grendel, .45 ACP, .40 S&W, 6mm ARC, and .350 Legend setups.
• Vast Finish Lineup: Raw Aluminum, Hardcoat Black Anodize, plus Cerakote in FDE, OD Green, Burnt Bronze, Blue Titanium, Tungsten Gray, Ridgeway Blue, S&W Red, Sig Pink, Bazooka Green, Titanium, and Zombie Green.
• American Made: Manufactured 100% in-house in the United States.

Please note: We will not ship 80% blanks to the following states: OR, NY, NJ, D.C., CT, HI, CA, MD, WA, DE, NV, IL and RI.This is not legal advice, and we encourage you to check your local and state laws prior to ordering. Items which are milled are not eligible for refund/return.

Please note: Some states may not allow you to legally manufacture a firearm. Please be sure to do your due diligence and make sure you are following your state and local laws before attempting to manufacture a firearm. This is not intended and should not be construed as an advertisement or offer for sale of any of our products to New Jersey residents or any person in New Jersey.