Black Diamond Armory BDA-M4 Stripped Lower Receiver
Proudly manufactured in Stewartville, Minnesota, the BDA-M4 lower receiver is built to mil-spec standards and refined with upgraded details to make your build smoother and better looking from the start.
The receiver showcases a clean, deep-etched BDA Spartan logo on the magwell, paired with sharp, professional roll marks including 3-position safety engravings (SAFE, SEMI, AUTO). The matte hard-anodized finish is even and resilient, giving it both a tactical look and long-lasting durability. Every line and cut reflects precise machining, offering a receiver that feels as good as it looks.
Enhanced touches—like the threaded bolt catch pin—make assembly easier while keeping your rifle clean and professional. Whether you’re starting a new build or adding another rifle to your collection, this lower is the perfect locally-made foundation.
Features:
Made in Stewartville, MN by Black Diamond Armory
True mil-spec compatibility for AR-15 builds
Bold BDA Spartan logo engraving
Crisp anodized finish for durability and clean aesthetics
Enhanced threaded bolt catch for simplified assembly
3-position selector engravings: SAFE / SEMI / AUTO
Model: BDA-M4 | Caliber: Multi
Black Diamond Armory BDA-M4 Enhanced Stripped Lower Multi-Cal Black
All FFL rules apply to this item. If you wish for us to ship to you, please email us after purchases of the nearest gun store to you and we will be happy to arrange shipment.
Must be 21+ years old to purchase.
Must have valid driver's license and a Permit to Purchase and/or Permit to carry to purchase.
Must pass a background check to take home.
Made to be mil-spec and is expected to work with any normal mil-spec part
